Malicious PDF — malware analysis report

Static analysis result for SHA-256 acf9b87764e9ff59…

MALICIOUS

PDF

64.2 KB Created: 2021-03-04 03:14:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9210e76f5ad6ed6e0ba04784595823c9 SHA-1: 3eb8e05bce273f3bd75ece26cba9e92260b09314 SHA-256: acf9b87764e9ff59bc10db6ce3df10fa4d005773de45029887cd53538ec81836
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://fokemale.ru/award?keyword=how+to+take+apart+sunbeam+mixmaster PDF link annotation
    • http://bometaximom.scienceontheweb.net/the_painted_bird_streaming.pdfIn PDF document text
    • http://probmaka.tech/69443262163vc19c.pdfIn PDF document text
    • https://cdn.sqhk.co/divoxisig/jdyhgih/best_water_parks_near_memphis_tn.pdfIn PDF document text
    • http://inostrana.com/22489216792kztry.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovipawe/ghgftgf/brain_it_on.pdfIn PDF document text
    • http://hookup154.fun/xiluvuxunaxexufxkhe5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392193/normal_600b678586e69.pdfIn PDF document text
    • https://cdn.sqhk.co/zujubiviv/widhgS5/kasuvogur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489732/normal_5ffc1cd28bf37.pdfIn PDF document text
    • http://dronextactical.xyz/zasudasanotikuzejesesq0as.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425728/normal_5fe56e3052c81.pdfIn PDF document text
    • http://pukebebizadolu.mypressonline.com/glencoe_chemistry_matter_and_change_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gowamojon/ixgdOid/bemopuwupirofofob.pdfIn PDF document text
    • http://health-top.ru/college_algebra_essentials_julie_miller8z203.pdfIn PDF document text
    • https://cdn.sqhk.co/sorubajuzoxe/uCibjbq/hearclear_hcr3_rechargeable_digital_hearing_aids.pdfIn PDF document text
    • http://zatoboyvibor.fun/is_the_new_york_stock_market_open_on_columbus_dayyy9xa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC135 5256 bytes
SHA-256: 11649e47236418939ea62246f0f22217938ae655fe9ab3defe7a74e7dc29d93f
font_01_sfnt_off0000d30c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD30C 9540 bytes
SHA-256: b1293cf4bec03a4339f68eaaa5280d8055d90d4b3b2294df5c2ed3e02426f701