Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d7d85cfaf83cc76…

MALICIOUS

PDF

71.1 KB Created: 2020-12-30 22:40:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: bf5e1ea7989264bc8f029b141972109f SHA-1: e6bdf09d4a185f1d8b9b3930f9453d79ab22a041 SHA-256: 8d7d85cfaf83cc76b34d6768c7516207ecb06a152c418d1e13f33987f7f46ed4
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://trafftec.ru/strik?utm_term=dice+roller+1-+6', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to a 'Dice roller'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or credential harvesting attempt.

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
  • 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://trafftec.ru/strik?utm_term=dice+roller+1-+6 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366371/normal_5f874307868d8.pdfIn PDF document text
    • https://sinegozedajosor.weebly.com/uploads/1/3/1/8/131871849/pezikizeme.pdfIn PDF document text
    • https://cdn.sqhk.co/fisejadiruw/BEggric/2009_starcraft_36rt.pdfIn PDF document text
    • https://bovuvodesibos.weebly.com/uploads/1/3/4/3/134377535/bd25e9f4bee1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495858/normal_5fad90a22eaae.pdfIn PDF document text
    • https://nodararikerat.weebly.com/uploads/1/3/4/8/134885074/dc66d.pdfIn PDF document text
    • https://povemiloten.weebly.com/uploads/1/3/4/6/134608376/wejala-bigexovo-jifatobekivu-webobemomatozor.pdfIn PDF document text
    • https://cdn.sqhk.co/fixakozumad/eSZfyhf/49906505249.pdfIn PDF document text
    • https://cdn.sqhk.co/vowibesep/wtibgcM/zuwaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384820/normal_5fdb5a316fac0.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/1f51b907-45f9-4dff-8453-86d54faa0236/84598463543.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8cf68c5-8bd2-41ba-897b-ba3aa84b010d/official_iphone_unlock_icloud_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e1c09f4-5fe8-47b4-be9c-0a1312c07bed/lotovoka.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_off0000dbbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBD 4644 bytes
SHA-256: 4e2a2d6537ebdd15f2ac15b444293da9480a818161284a6aa8ce614c4cd79128
font_01_sfnt_off0000eba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA9 10592 bytes
SHA-256: 9f93c5103964f62afb30a874c5bb4d0db5506a6a651e91a66d2ef16b05f495a3