Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9add173a1cacf83…

MALICIOUS

PDF

66.9 KB Created: 2020-12-14 18:55:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2967b866de92e20ade5d69f86acbefb7 SHA-1: aff50a6a9309512738d862cc5f6b52d3174e2a04 SHA-256: b9add173a1cacf8305858bc15db83dcd63d5ed49c6f6d2d710aaeed2ce3cd80d
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a link to a suspicious external URL, traffking.ru, which is likely used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffking.ru/strik?utm_term=thermofight+x+side+effects PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4474989/normal_5fcebf76904e3.pdfIn PDF document text
    • https://gesusetinor.weebly.com/uploads/1/3/4/6/134685025/3273028.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450630/normal_5faec83f494ad.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/xalexojaxipud/opg_lpa_continuation_sheet_2.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13c726609fd0ee793905a/t/5fc372cb145a8629dc1cbea1/1606644428030/rukanite.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfcfeef3361272aec3bb5/1606221055160/weber_spirit_200_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdee136457125654fef70a/1606282773432/13010230449.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dfc90b6b03258f356f92/t/5fc655b95147b148040abc38/1606833594331/hit_song_download_masstamilan.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c550bf71053ccb3114cc/t/5fcbd5591880ce05e8556ab2/1607193946644/27763006441.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1a46a70-149c-47c4-8b72-73f210f48a97/formatting_instruction_manual.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_off0000c93b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC93B 5208 bytes
SHA-256: 40fd0808d23692ba6a3f247382d66422026445df46cd4777643a4f82b2a2aa80
font_01_sfnt_off0000dada.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDADA 10692 bytes
SHA-256: b95c758859c24e375d6e5235266307a98080d4118fcb32a332fe081be72330da