Malicious PDF — malware analysis report

Static analysis result for SHA-256 be7222cd09901964…

MALICIOUS

PDF

68.7 KB Created: 2021-03-02 05:15:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: b3ac7a05eeb5c754bd14f82a13e06fff SHA-1: b653af7d2acf39c3bee92957ba6b7c51a238ec61 SHA-256: be7222cd099019647b823128cbd2d7009feee3ed27f9b1d7b890a0ed1219905e
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=camillus+carnivore+x In PDF document text
    • http://kexedeziferu.sportsontheweb.net/85801884331.pdfIn PDF document text
    • https://lamalirigade.weebly.com/uploads/1/3/4/5/134595912/ec90a9d4790f8fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466140/normal_5fe18004ab30c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457586/normal_601b8bf38c12e.pdfIn PDF document text
    • http://noncomform.space/jiduwidodokeffyskq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459062/normal_5fd7bb8d3c3e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502567/normal_5fe2946c5db5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488316/normal_6011b7f482ea1.pdfIn PDF document text
    • http://muzhskoizhurnal.ru/94201503378dj42f.pdfIn PDF document text
    • http://braco.ru/xefatisetigesod0ectb.pdfIn PDF document text
    • https://cdn.sqhk.co/nasanoroge/ahbDJjc/fezavenenelakesi.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/zedudo/wepobo.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/accounting_cycle_problems_and_worksheets.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_off0000cf8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8E 4976 bytes
SHA-256: 2a12194140b8aaedf9c64ecff261005c6bbbfea212bd398ff106649648d58340
font_01_sfnt_off0000e067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE067 10708 bytes
SHA-256: ef77fc07a49fcb6fd4fe8c66ca5e28e132e5b79d689aa85be0ee015d12f43809