Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad1679589d77a92b…

MALICIOUS

PDF

81.4 KB Created: 2020-12-30 17:25:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 2e649cfb6042a1497464415a0b13d495 SHA-1: 7a141780db5feb60836f8bbf206b31d968958ec7 SHA-256: ad1679589d77a92bc0635023c8d89e7be6422d03fecd5c64fdf94de9848fcbdd
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'https://traffmen.ru/123?utm_term=ivy+league+standings'. This URL is flagged as malicious and is likely used to lead the user to a phishing page or to download a secondary payload. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://traffmen.ru/123?utm_term=ivy+league+standings In PDF document text
    • https://fofosororu.weebly.com/uploads/1/3/4/6/134642422/wofesidiluxabi_fapuwanufawe_titefavegaga_mefavaza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385231/normal_5f97539d16ac1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366369/normal_5f88c280f39da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472776/normal_5fcbd76294e5f.pdfIn PDF document text
    • https://worijuxadije.weebly.com/uploads/1/3/4/8/134863955/5365876.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413975/normal_5fa7f1a0438fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474450/normal_5faaf265d89b1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/af2e5332-3bd7-4fa0-a540-62103e784c59/dana_30_axle_truss_kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea1673d6-ced9-4a64-8f9c-71a5d050189e/42423224264.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/babetorusetizadizeg.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/p._g._d._b._a_full_form.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_off00010104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10104 4996 bytes
SHA-256: 833127e6647d999ec1bc0598b614648baed599094c1301810ffe4990564e3bc3
font_01_sfnt_off00011225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11225 11908 bytes
SHA-256: e25e6bcc7e4fcd2ea4f572bfd47c912f4ddd2ec89fb6699a84c53cc441ad3331