Malicious PDF — malware analysis report

Static analysis result for SHA-256 2628653612764bb6…

MALICIOUS

PDF

72.0 KB Created: 2020-12-24 08:59:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5e85910c2b19a526ffd9dc371188d5c0 SHA-1: e93d6173cab3742671fa72af6801978f0510b5e5 SHA-256: 2628653612764bb62beb7510115c613dee3c485723541cdf012e1ef0cd19a3bb
154 Risk Score

Malware Insights

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

The PDF contains a link to known malicious redirector infrastructure, specifically 'traffmen.ru', which is designed to funnel users to further malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were extracted, the presence of a malicious redirector URL is a high-confidence indicator of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wb?keyword=voicemeeter%20banana%20setup%20pubg In PDF document text
    • https://liwevapazu.weebly.com/uploads/1/3/1/0/131071299/vananox-sinudapisuzib-pukaxukesabeka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409246/normal_5f9ea0223323f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417648/normal_5f995d780669b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444117/normal_5fe4102d1e115.pdfIn PDF document text
    • https://fategebedabeno.weebly.com/uploads/1/3/4/7/134718848/zosaverodasu.pdfIn PDF document text
    • https://cdn.sqhk.co/vibifexode/QwMIhfc/caveman_chuck_adventure_all_bosses.pdfIn PDF document text
    • https://cdn.sqhk.co/retirijozi/gfRozJ5/93639872022.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467038/normal_5fc2199885dd1.pdfIn PDF document text
    • https://didavetamij.weebly.com/uploads/1/3/4/3/134320859/pevibop.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/nolarifaforuxop/72893021048.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/tagakisipifufezurepogupuk.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_off0000db6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6A 5328 bytes
SHA-256: 7820bc7e95351f65d7371f5d7e4a6b1d9a88140f921fae88bea557e0f549676b
font_01_sfnt_off0000ed72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED72 11472 bytes
SHA-256: a6c5740994f4e4e4f41ea0571636258a1df90e63149da903d717466cbdbf7589