Malicious PDF — malware analysis report

Static analysis result for SHA-256 30ce89a1d59de8da…

MALICIOUS

PDF

73.9 KB Created: 2021-02-26 14:52:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4a370c2ca6a9cee1cfdea5ccd8f2751f SHA-1: 52ddb5e39c2de047da379e95cc91e298548d7079 SHA-256: 30ce89a1d59de8da31a1000620bf5d1a3c16d7d033ee690a969fe285729dee52
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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.
  • 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://dafemum.ru/wix?keyword=el+imperfect+worksheet+crossword In PDF document text
    • http://mademupo.22web.org/economics_today_17th_edition_free.pdfIn PDF document text
    • http://nesorus.mywebcommunity.org/how_to_program_dish_hopper_54.0_remote_to_tv.pdfIn PDF document text
    • https://vegiranelikir.weebly.com/uploads/1/3/4/3/134399044/futoto.pdfIn PDF document text
    • https://jirorenuges.weebly.com/uploads/1/3/0/8/130874518/siragasujemugevidij.pdfIn PDF document text
    • https://vafukomoruf.weebly.com/uploads/1/3/4/8/134862603/7078500.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wefadep/roller_coaster_physics_project_report.pdfIn PDF document text
    • http://karajifaderiwow.epizy.com/bugcat_capoo_stickers.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/2007_mercury_optimax_225_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/vernier_caliper_in_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/folder_dividers_template.pdfIn PDF document text
    • http://geforagegi.atwebpages.com/cazadores_de_sombras_2_pelicula_completa_en_espaol_online.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/lovely_noor_all_song_djpunjab.pdfIn PDF document text
    • http://wulibazosuxib.onlinewebshop.net/favorelalokejur.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/nofawuw.pdfIn PDF document text
    • http://daxojit.epizy.com/zebodudipiba.pdfIn PDF document text
    • http://tupaguwojisese.rf.gd/aldol_condensation_dibenzalacetone_lab_report.pdfIn PDF document text
    • http://fiforeru.atwebpages.com/fakarizemakagoteserudilez.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/bivadidaz.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE322 5296 bytes
SHA-256: 8047be910d129fdc357850927363a353241f61b8284c19bf388fd442039c3158
font_01_sfnt_off0000f517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF517 11160 bytes
SHA-256: 4176f24cef445ebe00e825a662706b92dcbf1c142fe21c3447288b204ac7579e