Malicious PDF — malware analysis report

Static analysis result for SHA-256 6faf3534ee9fe402…

MALICIOUS

PDF

80.8 KB Created: 2021-03-03 10:10:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 662cb5f1432ed0bb3eec5c17792b4d7b SHA-1: 026927d96423de355f3319035053404f66482fa2 SHA-256: 6faf3534ee9fe402b92a58203c431625c96d6ea59198f944b7fd6ad2080089fc
186 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 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://vilenefex.ru/award?keyword=soccer+goalie+workouts+at+home PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495551/normal_603d9c38ab171.pdfIn PDF document text
    • https://nefabilaj.weebly.com/uploads/1/3/1/4/131438225/0353be52012528.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470833/normal_5fdc0c8b4d358.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465392/normal_5ff5199c8fa0a.pdfIn PDF document text
    • https://cdn.sqhk.co/bomoxale/AgiGijt/xalogogijipinurorebu.pdfIn PDF document text
    • https://rizitutidu.weebly.com/uploads/1/3/1/8/131856545/gadoduwefeniv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455881/normal_5ff96e746e906.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455198/normal_5ff8a2ad25d4d.pdfIn PDF document text
    • https://cdn.sqhk.co/gokarunedod/hhijbje/nemuwojodozemamitimuban.pdfIn PDF document text
    • https://cdn.sqhk.co/neseleko/hibsSjf/proverbial_drawing_board_definition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470537/normal_5fd8bc7b85182.pdfIn PDF document text
    • https://xapunuzut.weebly.com/uploads/1/3/4/6/134683745/pokadozukubizo.pdfIn PDF document text
    • https://xugojegisonixen.weebly.com/uploads/1/3/4/6/134684264/c6e760284c3f.pdfIn PDF document text
    • https://vepemetamat.weebly.com/uploads/1/3/4/3/134354227/nisutip-tutuvujo.pdfIn PDF document text
    • https://lanasasaf.weebly.com/uploads/1/3/0/8/130815311/falesaxemarareb.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_off0000fdb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB4 5472 bytes
SHA-256: cd8d1f1ea91d9acf3b51dfae6850edbba856712d4b6eb4ae1085980e1bce82fe
font_01_sfnt_off0001103b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1103B 11268 bytes
SHA-256: d3c351f42e7f624bf556cce494235c1d3bd43a729e41451c5c50c62d674bc964