Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a78e1e205734414…

MALICIOUS

PDF

73.1 KB Created: 2021-02-26 21:58:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: aba1348909d290c1a6cc9fad35b4cabc SHA-1: 4000dc0e15f9830a15f14d4b2c9ae60fe8f0cd0f SHA-256: 5a78e1e205734414abd68cdfe16dc6b47e83667dd31adb1c27a9be8c2cb20fd3
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://xajibur.ru/award?keyword=pipe+saddle+branch+layout PDF link annotation
    • http://my-favshopd.online/braun_coffee_maker_clean_function0vths.pdfIn PDF document text
    • https://cdn.sqhk.co/sipebililofo/ihictib/dragon_ball_questions.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417327/normal_5fc8d40fc4c86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424689/normal_60315f3ad62f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450730/normal_602d41c3bb087.pdfIn PDF document text
    • http://poverkavoda.website/18189795207oz19n.pdfIn PDF document text
    • http://naguvogegexaze.22web.org/backyard_baseball_2005_free_pc.pdfIn PDF document text
    • http://prodive.su/votokametavuzurei8x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452861/normal_60265955af2e2.pdfIn PDF document text
    • https://cdn.sqhk.co/nowovadizeb/jh8jbjb/80432952271.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/ehc4Jij/zusapebudiwuxat.pdfIn PDF document text
    • https://cdn.sqhk.co/rukububibon/ejbgghe/wixegire.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lofawevivere.epizy.com/wuxewoganomagavu.pdfIn PDF document text
    • http://menufuvaso.rf.gd/88490591424.pdfIn PDF document text
    • http://vimiromomekex.epizy.com/ffxiv_drk_rotation_guide.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_off0000e181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE181 5404 bytes
SHA-256: cf38b368bbb83514746ae67451b6992d9a862442e03a0ed4f2cba5654f77bfa2
font_01_sfnt_off0000f3da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3DA 10412 bytes
SHA-256: 05f6117f7378256e7ba64ec60c5b51b9f172e1e4cc71549885ee2676311f224b