Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bd1320feb75228b…

MALICIOUS

PDF

68.8 KB Created: 2021-02-24 11:37:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3e71d5026fa1d21874dda085437b18c8 SHA-1: 2ddcec58dd25befc3fe44e0fd6b3274d8061751b SHA-256: 4bd1320feb75228bc227b31d0085d73144f6a21ce0df932f7bc85f5acae50efc
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://bologen.ru/wb?keyword=feminist%20theory%20sociology%20summary PDF link annotation
    • https://cdn.sqhk.co/dikizumi/hb9ghgd/65742202632.pdfIn PDF document text
    • http://samyog.ru/68537548139ec6vi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420747/normal_60239e6731a62.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449965/normal_5fc7ff8378740.pdfIn PDF document text
    • http://idealica-it.website/gafulubepupifoi5cas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388820/normal_60220e1562f2a.pdfIn PDF document text
    • http://vadakob.22web.org/hemispheric_dominance_inventory_answer_key.pdfIn PDF document text
    • https://cdn.sqhk.co/gujowaxexag/ALhb9Iq/watiwotawebejajogix.pdfIn PDF document text
    • https://cdn.sqhk.co/nabixisaf/ghfvoyh/dumomozob.pdfIn PDF document text
    • http://study-english-04.space/mk2_fatalities_super_nintendojh651.pdfIn PDF document text
    • https://cdn.sqhk.co/degavorofala/dto5jj8/aesthetic_wallpapers_pink_flowers.pdfIn PDF document text
    • http://itsnat.space/877629873284npn5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedixowodok.epizy.com/assassin_s_creed_odyssey_hidden_trophy_guide.pdfIn PDF document text
    • http://wegoxoxajenugol.rf.gd/international_journal_of_information_science_and_management_impact_factor.pdfIn PDF document text
    • http://derajovaku.rf.gd/66029028031.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_off0000d20e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD20E 5268 bytes
SHA-256: 3fa618abd2ed0821239a7ad86eab59d85e03540e2475e3dc2549a0b806cfd6b5
font_01_sfnt_off0000e3d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D9 10056 bytes
SHA-256: 6adbc433741cb4177a2eaa6a2f625d8be65b8bfa0b9fa378c167d4e5ff5c9f73