Malicious PDF — malware analysis report

Static analysis result for SHA-256 e88de3a921ea79d4…

MALICIOUS

PDF

68.9 KB Created: 2021-01-27 17:54:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: bfece07200c8b9fe3cfd2cf740001c50 SHA-1: f2e6cdd66c203cc1c36fbead9a416f32d669785a SHA-256: e88de3a921ea79d4b37ecdbfc68906683e39cf871ab45e1cfb96d25789e5a5f4
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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/aws?utm_term=guided+dove+hunts+in+oklahoma PDF link annotation
    • https://wuzakadebetes.weebly.com/uploads/1/3/0/8/130814976/mezuw_xagosagarapuxiz.pdfIn PDF document text
    • http://picsonair.com/best_2d_online_games_for_androiduf2k3.pdfIn PDF document text
    • https://sefewazugep.weebly.com/uploads/1/3/5/2/135293251/vibedemes.pdfIn PDF document text
    • https://direwuberegenis.weebly.com/uploads/1/3/4/3/134361890/bitibi.pdfIn PDF document text
    • https://mikotefi.weebly.com/uploads/1/3/2/6/132695671/pubas-jutonak-dififakabipes-wijokanov.pdfIn PDF document text
    • https://fosuwelu.weebly.com/uploads/1/3/2/6/132695698/becbdecdf41.pdfIn PDF document text
    • https://lemuvizavo.weebly.com/uploads/1/3/2/6/132682731/3848276.pdfIn PDF document text
    • https://nubipudovolena.weebly.com/uploads/1/3/4/0/134012318/wepeger.pdfIn PDF document text
    • http://natnat.fun/11070405732xjbzp.pdfIn PDF document text
    • https://valutakawewa.weebly.com/uploads/1/3/1/3/131378791/6534178.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479688/normal_5fdb91f0a039b.pdfIn PDF document text
    • http://mirror-x.org/sefovuweximeweruvubapapegrfgod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378165/normal_6004dc0cb045a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xigesema.epizy.com/passport_photo_template_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/free_invitation_card_templates_online.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_off0000cf64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF64 5124 bytes
SHA-256: 0430b3926c56d8883f810e464260df601e17117ded29434a07e0f19a7493da4c
font_01_sfnt_off0000e0b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B4 11140 bytes
SHA-256: 4a347bd9331944b8a2c213993c87b6538e270995b757e5e3b5fb4c670c3a3223