Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb37865959a8032…

MALICIOUS

PDF

71.6 KB Created: 2021-02-26 22:10:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 54ad2896ad0f9125d9404b8003806495 SHA-1: d434947c3b5a5132d2825f3f4525b2396b596df4 SHA-256: 2fb37865959a8032f81756ca09dbbc9b3174ba29e89814246eab685af4f6bc89
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://xezojetit.ru/award?keyword=can+you+reverse+look+up+a+google+voice+number PDF link annotation
    • https://wagimudo.weebly.com/uploads/1/3/4/4/134475497/jasetuj-gonitonagur.pdfIn PDF document text
    • https://nepuvojikonutoz.weebly.com/uploads/1/3/4/6/134677469/3b3ab564.pdfIn PDF document text
    • https://mobinefoju.weebly.com/uploads/1/3/1/3/131398425/wasipajisegizoriv.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/hcghjh4/81068466732.pdfIn PDF document text
    • https://wixolovab.weebly.com/uploads/1/3/0/7/130776385/aac8a1dd080f593.pdfIn PDF document text
    • https://dosifezo.weebly.com/uploads/1/3/4/6/134619581/dacdc33fc106b9.pdfIn PDF document text
    • https://rejezulibege.weebly.com/uploads/1/3/4/0/134018585/2009913.pdfIn PDF document text
    • https://cdn.sqhk.co/jemajujo/04ibxkY/jevabugegotazuxigirimavu.pdfIn PDF document text
    • https://wufikaxom.weebly.com/uploads/1/3/4/8/134883002/rifimulepeveve.pdfIn PDF document text
    • https://nimaxosonoj.weebly.com/uploads/1/3/4/8/134897368/7347935.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kesekerezox.epizy.com/golijorab.pdfIn PDF document text
    • http://dufexupomom.rf.gd/bmj_author_submission_guidelines.pdfIn PDF document text
    • http://punegejofuj.epizy.com/lobusitogudulilovemumet.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/postcard_address_format_germany.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_off0000dc47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC47 5524 bytes
SHA-256: 71992b1a8dd721c7c75de6b38da37c4d0ab2339d75821399d88a21385ea97f4a
font_01_sfnt_off0000ef0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0E 10096 bytes
SHA-256: 2613ec5ec931f5efa62fc87ef2df99cdae8752bcf4bcef05438f2c810557585c