Malicious PDF — malware analysis report

Static analysis result for SHA-256 846a79ca229673fb…

MALICIOUS

PDF

70.3 KB Created: 2021-02-23 02:16:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 84b1f4a636cb0d18e0d2281258f258b6 SHA-1: 49ed8de269dbcf5d5e2f719cb9836f621d6cbc9f SHA-256: 846a79ca229673fb03035017b69fe948d6a561990f0a77eae4cbb21f3bfa24a5
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://maypoin.ru/aws?utm_term=hp+laserjet+p2015+drivers+free+download+for+windows+xp+7 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446272/normal_5fda7323efb6b.pdfIn PDF document text
    • http://babysampler.com/alopecia_areata_tratamientozbpdo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408983/normal_5fe1becfb739e.pdfIn PDF document text
    • https://muxetomanudone.weebly.com/uploads/1/3/1/4/131406273/e6f7963b.pdfIn PDF document text
    • https://cdn.sqhk.co/gaduwifawide/hhgcxbu/solar_system_project_4th_grade.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391907/normal_6018ef4a13dd6.pdfIn PDF document text
    • https://dasowafajego.weebly.com/uploads/1/3/4/7/134723411/5546488.pdfIn PDF document text
    • https://cdn.sqhk.co/samofetob/gf9c8pv/butoxigavudalexijuj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419425/normal_5ff8f3afe0019.pdfIn PDF document text
    • https://bakubirusi.weebly.com/uploads/1/3/4/6/134680497/99e9a7ce.pdfIn PDF document text
    • http://how2clever.com/209870095369i2w9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476943/normal_5fe1383cc4e59.pdfIn PDF document text
    • http://temppicture.xyz/pajifikinowubezivoziwasb8pb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409630/normal_601ce3d70fb7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367297/normal_601db6d199132.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417119/normal_60086891c9d8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474448/normal_5fe705a0cfd91.pdfIn PDF document text
    • https://cdn.sqhk.co/toxinize/iUsifub/vikings_cast_season_4_french_princess.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_off0000d2fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2FD 5824 bytes
SHA-256: e4f29010164037f199d791173752506f1593961af9d40331226cdbf2f75c80bb
font_01_sfnt_off0000e706.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE706 10740 bytes
SHA-256: 44d203c1d07019a7d87ef33333f83aff0d75f2974e84491f38c6f6503e3d6c9a

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