Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c60de2f25c67cb8…

MALICIOUS

PDF

71.4 KB Created: 2021-02-16 08:01:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d06cbe614d9d89d0ae6d80bea2acd23e SHA-1: 94a11516711e4e2dfc7abda8df0e73e226f87b46 SHA-256: 8c60de2f25c67cb8f62f71c6b113064a245ba823d0c8a0338e8179329119e8d7
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • 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://leonvi.ru/123?utm_term=apc+back-ups+es+700+manual PDF link annotation
    • http://damita.fun/twitter_logo_vector_pngrxcas.pdfIn PDF document text
    • http://zawugexoj.22web.org/14748929819.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/ehahhhc/jaxujutumuvop.pdfIn PDF document text
    • https://cdn.sqhk.co/vugomupuzisa/0jhhfhd/86900299356.pdfIn PDF document text
    • https://cdn.sqhk.co/womawuxinuge/L1hiP0e/cake_designs_for_1st_wedding_anniversary.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454161/normal_5fe1f12991259.pdfIn PDF document text
    • http://hookup681.site/192288140793bn70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392862/normal_601b7b45f248b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459629/normal_5ffc56843d8e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489601/normal_60265e02cb897.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426541/normal_5ff4d44b72865.pdfIn PDF document text
    • http://form-copyrightservices.com/kalekamupikututiwutepamonc18hx.pdfIn PDF document text
    • https://cdn.sqhk.co/linotepibubi/jbheiLJ/likagapotirozax.pdfIn PDF document text
    • https://vawuzusafut.weebly.com/uploads/1/3/4/8/134863851/db06c5b1d485763.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zowuxepalaget.epizy.com/crystal_reports_runtime_version_13.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_off0000da17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA17 5428 bytes
SHA-256: 98979a27f37c37a9a919f8e9e5f8a20c0549f2d169ba0333773fffe8cca97a1f
font_01_sfnt_off0000ec8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8C 10700 bytes
SHA-256: 296d54013447c2fe7ef27005cf4335ac8fc3a9753270919bbb59f66a971ab477