Malicious PDF — malware analysis report

Static analysis result for SHA-256 00c5a4b940c42172…

MALICIOUS

PDF

82.7 KB Created: 2021-03-19 23:58:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 156f38c5c0cc6b39a472aedc3f7ee039 SHA-1: 523e1e2781334689ea2892975e837db513a66ca7 SHA-256: 00c5a4b940c421723a06d08c3788b2c80b06246f1405b0bc2cfd5dd7b2c617a0
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/award?keyword=comparison+of+adjectives+elementary+pdf PDF link annotation
    • http://mamefumiwuto.mywebcommunity.org/tokyo_ghoul_review_season_3.pdfIn PDF document text
    • http://pedagodogiko.getenjoyment.net/fipokode.pdfIn PDF document text
    • http://forisawidokomor.sportsontheweb.net/area_and_perimeter_of_rectangle_and_square_worksheets.pdfIn PDF document text
    • http://jonebukusopovet.mygamesonline.org/greenstar_8000_life_user_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/mutexeze/qYge8jf/slice_shapes_photoshop.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/ggjhdFK/city_racing_3d_download_for_pc_windows_7.pdfIn PDF document text
    • https://cdn.sqhk.co/jojewezalika/hdhjBgh/66616657543.pdfIn PDF document text
    • http://gedatidigog.sportsontheweb.net/directv_remote_control_stopped_working.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/heC2fUa/job_candidate_evaluation_template.pdfIn PDF document text
    • http://tigadugutuvatix.mygamesonline.org/22577477119.pdfIn PDF document text
    • http://xepidenad.scienceontheweb.net/11664025848.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://55d63786-14d6-44de-84d0-33f1fb383c44.filesusr.com/ugd/45fd81_ebbef842aefe4c92ae2a250c7ded6d3f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/easy_guitar_tabs_for_christmas_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/ps_vita_emulator_for_pc_android_download.pdfIn PDF document text
    • https://720c7b34-a033-4bf0-83ea-6be17de98aa2.filesusr.com/ugd/03ef8e_763f48897daf419cb2ec12e052aec23a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wizedumi/32412603871.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/65803515273.pdfIn PDF document text
    • https://e60c805d-b9e1-47fc-b045-983511e9ac1f.filesusr.com/ugd/116bb2_b514eb94a22240a19ee2541aab2b2891.pdf?index=trueIn PDF document text
    • http://romepasuv.myartsonline.com/bangkok_train_map_2020.pdfIn PDF document text
    • http://luxupovokajaf.onlinewebshop.net/denusalegifajus.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/vampire_diaries_season_1_songs_download.pdfIn PDF document text
    • https://c788b29d-df2d-4d46-9946-349e8cce89b7.filesusr.com/ugd/a9e086_48877aa33dd64d94bf4905ecb8bec37e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/liluvad/thermador_kitchen_design_and_planning_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/abox_android_box_setup.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://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001047b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1047B 5444 bytes
SHA-256: 5a4b346b7863353af46c9a6ef992b9e0ad8a9603778dddc0b8c7323521bffae7
font_01_sfnt_off000116f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116F8 11172 bytes
SHA-256: 3d3339026f24f28f65c32a7fa916be3dc7436b8ce9c03492c513327a2b1882ba

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