Malicious PDF — malware analysis report

Static analysis result for SHA-256 f196f10f8fa10604…

MALICIOUS

PDF

71.7 KB Created: 2021-02-27 15:30:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 68d1a03f29a0cbc8d0a9f5f3c76f5d46 SHA-1: 48c966ddf79736e1d737dbd80814b52dcfe21074 SHA-256: f196f10f8fa10604ab49f85b9eb2947e615e2bb6a016afa36100bae734006792
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://druttle.ru/wix?keyword=google+maps+pictures+upload PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383314/normal_5fd76d6527541.pdfIn PDF document text
    • http://edayafar.xyz/72992415388qsu1k.pdfIn PDF document text
    • http://mon-cmso.best/nietzsche_on_truth_and_lying_in_a_nonmoral_sense_summaryaj110.pdfIn PDF document text
    • http://onlinekartiadesi.com/mamareneworelzl2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423189/normal_602f6d96b7459.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414847/normal_6014530bbbdba.pdfIn PDF document text
    • http://susurrus.space/bintang_bier_logo_free6leje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374022/normal_60240c38b7346.pdfIn PDF document text
    • https://rapagifetudi.weebly.com/uploads/1/3/2/6/132682686/tuvopejezasugi.pdfIn PDF document text
    • http://pomirkapa.site/ciclo_demingf5izd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368489/normal_5fd66132a2cdf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405650/normal_60224d0b16d87.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/suxaxenasovobefetanutunoj.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_off0000dd57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD57 5424 bytes
SHA-256: 654006c046ee57e1ec9976f1a9246728af9c4535bfe9b474eee87892f7f585c2
font_01_sfnt_off0000efb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB4 10084 bytes
SHA-256: e898c5c92055478d1f061a5b67619083650dd5432a09526bc3edf70fe505f426