Malicious PDF — malware analysis report

Static analysis result for SHA-256 44a9b9cc629670a3…

MALICIOUS

PDF

70.3 KB Created: 2021-02-26 12:59:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9e7754b1027320bed5c1cd8cc5d68143 SHA-1: 5f67e6243a4da8c3a04f1a5d95cc6b99ab4678b2 SHA-256: 44a9b9cc629670a3508983856d8915feef7edf4dbb46aef723488f50fdcb2862
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lozipotod.ru/award?keyword=hp+probook+6560b+fingerprint+driver+windows+8 PDF link annotation
    • https://cdn.sqhk.co/bikegola/heghAjd/saudade_pronunciation_british.pdfIn PDF document text
    • https://cdn.sqhk.co/bikegola/hbHhi0R/ww2_battle_simulator_mod_apk_revdl.pdfIn PDF document text
    • http://zewenidasi.iblogger.org/ielts_writing_task_1_with_answers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490364/normal_5fffb250a136c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443824/normal_601b03b09ff16.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/is_wolf_of_wall_street_on_netflix_or_hulu.pdfIn PDF document text
    • http://takafebuxoz.22web.org/wixoworib.pdfIn PDF document text
    • https://cdn.sqhk.co/pomorezolo/jhiNUic/xitopoxu.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/muvarelo/transformers_2_arcee_sisters_toys.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/52295915407.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/59044226095.pdfIn PDF document text
    • http://saxodanokijaj.atwebpages.com/zifafezebupuxogafafuf.pdfIn PDF document text
    • http://sugexure.rf.gd/beauty_game_free.pdfIn PDF document text
    • http://rejeremonuwiz.rf.gd/sivojo.pdfIn PDF document text
    • http://nixevafuzija.epizy.com/mini_cooper_hidden_menu_f56.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_off0000d4c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C2 5900 bytes
SHA-256: ac26f2df8fd3dc75c24729bcc3dff1ecc88b6e6a576f4f61382e122701ea8dde
font_01_sfnt_off0000e8fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FC 10304 bytes
SHA-256: f891d806dbec373f75b7f7666351de10199ccece2e48d7daa2bb9831f09e47d8