Malicious PDF — malware analysis report

Static analysis result for SHA-256 a34e16839626b52b…

MALICIOUS

PDF

66.5 KB Created: 2020-12-26 05:10:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ba103df72ed4657cda95b7e29d639f46 SHA-1: c38420c2652a767d461b5048a925d94f0c6e69b9 SHA-256: a34e16839626b52b10dd4e4a95a2028f3ac9080ff1c59eee31c77b6a072cca96
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/strik?utm_term=lucky+coin+laundromat+new+orleans+la'. The ML classifier also flagged this PDF with a high probability of being malicious. While no scripts were explicitly extracted, the presence of a malicious redirector strongly suggests an intent to lure the user to a compromised site, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://cctraff.ru/strik?utm_term=lucky+coin+laundromat+new+orleans+la In PDF document text
    • https://fategebedabeno.weebly.com/uploads/1/3/4/7/134718848/bcb576e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421341/normal_5fc3bbb0ece89.pdfIn PDF document text
    • https://rafogemi.weebly.com/uploads/1/3/4/7/134754229/ditumodujekenibowele.pdfIn PDF document text
    • https://pagurewitapusak.weebly.com/uploads/1/3/4/6/134632053/7da17d11.pdfIn PDF document text
    • https://vofadifop.weebly.com/uploads/1/3/4/5/134580142/bikatoturawal-gipix-sekoxenul-pexifuzem.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367313/normal_5fcb53e3afee5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466676/normal_5fdf8c8a448e6.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/lolaritemukole/94293901126.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/pilidopeb.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/92971313026.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/dragon_world_mod_apk_1.98713.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/antalya_resorts_guide.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_off0000c528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC528 5284 bytes
SHA-256: 442aff8326e89d6fe511052886291c3ace93d8470be54d4c0b361cab54a9c4e1
font_01_sfnt_off0000d72c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD72C 11524 bytes
SHA-256: 594211def2583c6fce4310bf58417680b43c3993f0c18756a0e75e4c45f1bbe7

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