Malicious PDF — malware analysis report

Static analysis result for SHA-256 0293ff1d91a0b927…

MALICIOUS

PDF

69.6 KB Created: 2021-02-27 23:03:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a5c9c50da7990b1fd7f7961554c1b075 SHA-1: a23bd836940d649037b6aec8b63f89e0475bccfe SHA-256: 0293ff1d91a0b927e653e5acbea1b662cce73e8f0a48ba2c76033d98958694ef
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://pelibifir.ru/award?keyword=dell+inspiron+e1505+ram+upgrade PDF link annotation
    • https://bonujuvab.weebly.com/uploads/1/3/2/7/132740321/6777214.pdfIn PDF document text
    • http://nawukebakesejid.iblogger.org/63950729326.pdfIn PDF document text
    • https://kefavobora.weebly.com/uploads/1/3/6/0/136010588/1897626.pdfIn PDF document text
    • https://pusixeraz.weebly.com/uploads/1/3/2/6/132681440/wojodawebo.pdfIn PDF document text
    • https://sagupegijugix.weebly.com/uploads/1/3/4/4/134443219/kugumeposuzo.pdfIn PDF document text
    • https://xexibufit.weebly.com/uploads/1/3/0/7/130739933/2184827.pdfIn PDF document text
    • http://copyrightshelpcenter.com/10065683998sq6jp.pdfIn PDF document text
    • https://fapudunaga.weebly.com/uploads/1/3/0/7/130776769/livor.pdfIn PDF document text
    • http://faxozulakevosos.iblogger.org/34848599628.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/kubafezin/braun_electronic_food_processor_4261_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/american_parliamentary_debate_format.pdfIn PDF document text
    • http://fikenojidukozo.rf.gd/jibebobasomupidu.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_off0000d2e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2E2 5596 bytes
SHA-256: d98a065c55a8fee256984b7ae34d35aefd0aad68bb346a7e930fa45aa548bb86
font_01_sfnt_off0000e5e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E2 10612 bytes
SHA-256: df566fe8d3dece8557911e9749f559911845da7eae6e275d874c1e91a4a19e31