Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 5ad3c3d0e0253f38…

MALICIOUS

PDF / .VIR

352.9 KB Created: 2023-05-22 21:46:01 Authoring application: Inkscape First seen: 2024-04-28
MD5: ea03e0ac2a13a6f30cf8e7ed62c6eabd SHA-1: 9c555deed699f7485f175907b2bcc8c354f85e2e SHA-256: 5ad3c3d0e0253f38c9110576a63759bdb2975cc26c41306deb37de4c669cf714
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9421

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • PDF carries website-builder CDN document link farm medium PDF_CDN_PDF_LINK_FARM
    PDF contains many clickable PDF links parked on website-builder CDNs or simple download gateways together with visible ebook, manual, or download lure text. This matches generated SEO document carriers used to route users through untrusted link/download chains; the PDF itself is an inert link carrier.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://adservice.google.com.om/ddm/clk/425484003;227454619;f;;%3F//img1.wsimg.com/blobby/go/ef4dc919-e520-4e41-82d6-1cc9237762d4/downloads/46822918750.pdf In PDF document text
    • https://adservice.google.com.af/ddm/clk/300948314;127869103;e;;%3F//img1.wsimg.com/blobby/go/1871a912-900d-4aad-a2ad-316b00feb5f1/downloads/role_of_hr_in_performance_management.pdfIn PDF document text
    • https://adservice.google.com.af/ddm/clk/310682673;138356009;g;;%3F//img1.wsimg.com/blobby/go/ef4dc919-e520-4e41-82d6-1cc9237762d4/downloads/fisewaduwikusasaxububil.pdfIn PDF document text
    • https://adservice.google.co.uz/ddm/clk/448794861;252804937;a;;%3F//img1.wsimg.com/blobby/go/e5a15a19-9046-428d-ac0e-b80e528c36c8/downloads/48389002121.pdfIn PDF document text
    • https://adservice.google.co.th/ddm/clk/478229754;284365575;c;;%3F//img1.wsimg.com/blobby/go/f36bc8a5-4b50-4d91-a4e7-d7ff411cfc39/downloads/xizubiwetufizuk.pdfIn PDF document text
    • https://vimebajazez.haviol.co.za/107045464342367558?baxujurusigatukofugerumewonajasuxarusudivomusujefagumisimidedibekokotaxaregulupoxisoxaw=jabojirimugesobewasipilutufexuwupuledifemofakanojedubabivomajoriduxebatosebafipiwomabemipixeregojunuxemogesifagizetimumubabezilukofojanirosugefapajagixipokigofoxojijivarilubozavovemilobeparuripogesatuzixazesaz&keyword=2020+mazda+mpv+repair+manual+free&wulubotalebikokewerawoxolufosomibepanavovipobutulitokerawiwivipememomizebinija=fajevutorifevivezarawilutumunazalirolomizodidufaserozodejugunenavilofesudopasedinipexumufegilexobolobadamoIn PDF document text
    • https://adservice.google.co.zw/ddm/clk/445204615;249060672;c;;%3F//img1.wsimg.com/blobby/go/25cc9d1c-0ed0-427b-b700-b07d971a6960/downloads/properties_of_terpenoids.pdfIn PDF document text
    • https://adservice.google.co.in/ddm/clk/310682673;138356009;g;;%3F//img1.wsimg.com/blobby/go/21ccf65e-12df-46bd-97ed-55c9c9969bc5/downloads/gezogurukamixedebeforajot.pdfIn PDF document text
    • https://vimebajazez.haviol.co.za/107045464342367558?baxujurusigatukofugerumewonajasuxarusudivomusujefagumisimidedibekokotaxaregulupoxisoxaw=jabojirimugesobewasipilutufexuwupuledifemofakanojedubabivomajoriduxebatosebafipiwomabemipixeregojunuxemogesifagizetimumubabezilukofojanirosugefapajagixipokigofoPDF link annotation
    • https://vimebajazez.haviol.co.za/107045464342367558?baxujurusigatukofugerumewonajasuxarusudivomusujefagumisimidedibekokotaxaregulupoxisoxaw=jabojirimugesobewasipilutufexuwupuledifemofakanojedubabivomajoriduxebatosebafipiwomabemipixeregojunuxemogesifagizetimumubabezilukofojanirosugefapajagixipokigofoxojijivarilubozavovemilobeparuripogesatuzixazesaz&keyword=2020+mazda+mpv+repair+manual+free&wulubotalebikokewerawoxolufosomibepanavovipobutulitokerawiwivipememomizebinija=fajevutorifevivezarawilutumunPDF link annotation
    • https://img1.wsimg.com/blobby/go/85a90f7b-2802-4d67-a7c3-ecd4058edb0c/downloads/oral_histology_mcq.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/1871a912-900d-4aad-a2ad-316b00feb5f1/downloads/wps_wpa_tester_no_root_apk.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/404b80f3-a606-4d81-a2d2-600187ec2a38/downloads/bt_notifier_apk_mirror.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/85a90f7b-2802-4d67-a7c3-ecd4058edb0c/downloads/13279973004.pdfIn PDF document text
    • https://adservice.google.ch/ddm/clk/408533097;208818505;l;;%3F//img1.wsimg.com/blobby/go/86eb7e36-766e-41a0-9730-09645b976846/downloads/mavufojuvepuru.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/08ffad7c-327f-44df-9cf7-1cb8663b03d8/downloads/japanese_wood_joinery.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/cb9e9eaf-be42-4ac0-bb4e-12c85eaa2860/downloads/cash_book_format.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/16b2135f-28cf-4260-8d70-41b87ffd018e/downloads/towolelarili.pdfIn PDF document text
    • https://adservice.google.hn/ddm/clk/426382440;228185261;d;;%3F//img1.wsimg.com/blobby/go/d67c91ef-ce48-4dab-8e91-9ef52d542759/downloads/clifford_geertz_books.pdfIn PDF document text
    • https://adservice.google.mn/ddm/clk/426382440;228185261;d;;%3F//img1.wsimg.com/blobby/go/23988f00-c382-4229-859c-613be63aaff3/downloads/karaoke_vocal_remover_apk.pdfIn PDF document text
    • https://adservice.google.lu/ddm/clk/408405163;208572896;n;;%3F//img1.wsimg.com/blobby/go/16b2135f-28cf-4260-8d70-41b87ffd018e/downloads/komunufiwe.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/85a90f7b-2802-4d67-a7c3-ecd4058edb0c/downloads/assonance_and_consonance_worksheets.pdfIn PDF document text
    • https://adservice.google.la/ddm/clk/426382440;228185261;d;;%3F//img1.wsimg.com/blobby/go/bbeb1eee-80df-4aec-a6ee-528f983d499b/downloads/translating_word_equations_chemistry_worksheet_unit_4.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/61089262-d6ee-4eca-8003-c56dcc0fc3fd/downloads/39939366181.pdfIn PDF document text
    • https://adservice.google.gr/ddm/clk/478229754;284365575;c;;%3F//img1.wsimg.com/blobby/go/1871a912-900d-4aad-a2ad-316b00feb5f1/downloads/94869893939.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00052f7c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00052f7c.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52F7C 10724 bytes
SHA-256: 58585570da1d1540cea116d4e4f7db32cb81d2abe694b6f4ab2fa1d008b8e4f9
font_01_sfnt_off0005482a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5482A 17096 bytes
SHA-256: 14044cda57f4fe0cbd109a3a4e219e63b9abf480328b93f2df2f13e213a06021