Malicious PDF — malware analysis report

Static analysis result for SHA-256 00ba30e9954ed6c7…

MALICIOUS

PDF

66.2 KB Created: 2020-12-15 15:51:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: b70672cc9bdec12362866ae5a4c13ef5 SHA-1: b6cae96d44fca45bc92f200da53e1426f39f7365 SHA-256: 00ba30e9954ed6c7e80c18de2aba8e9d3d3eb60ebbcb79557645fb4c863351d2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, a common tactic for link farms and phishing campaigns. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, with one pointing to 'https://traffset.ru/123?utm_term=csa+profile+in+airport'. ClamAV also detected this file as 'Pdf.Phishing.Trojan'. The presence of embedded URLs and the overall structure suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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.
  • 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://traffset.ru/123?utm_term=csa+profile+in+airport PDF link annotation
    • https://nofefikow.weebly.com/uploads/1/3/4/5/134510094/4504243.pdfIn PDF document text
    • https://guxesawaxogego.weebly.com/uploads/1/3/4/3/134314991/828868.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/ferulefigujebovepa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465709/normal_5fd3b5ed346cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466143/normal_5fcfa89719772.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcffc1b4c4d833b8be1fdd/1606221762000/6176130694.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/gimesolitumagebi.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/winar.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/37902870345.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/65522392350.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_off0000c7a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A1 4800 bytes
SHA-256: f87d08284753251d6fca97ae458cb833b3ccfa64e259717d5e6fda0c933d2826
font_01_sfnt_off0000d7fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7FD 10760 bytes
SHA-256: 9dd80a7ee48f07a0396aa92886eada1ff463540e930b8a0ea8fc34c3d5ec563d