Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc5d6d88cad44afd…

MALICIOUS

PDF

223.5 KB Created: 2020-11-18 03:51:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 102c63b8adad001ef2df0decee5e948f SHA-1: 13753071a9bc9c3b1e8cf94cf78e4e0b07aad9cc SHA-256: bc5d6d88cad44afd3f15019b22907b919b83df0a88370d25ead30f911dfb24e0
104 Risk Score

Malware Insights

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

The file is identified as malicious by a ClamAV signature and an ML classifier. It contains an embedded URI pointing to 'trafffi.ru', which is a strong indicator of a phishing or malware distribution attempt. The heuristic 'SE_URGENCY_LURE' suggests the document's content aims to create a false sense of urgency to prompt user interaction with the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://trafffi.ru/aws?utm_term=idsa+guidelines+cellulitis+abscess
    • https://cdn-cms.f-static.net/uploads/4366645/normal_5f8e60bfd3f51.pdf
    • https://cdn-cms.f-static.net/uploads/4384468/normal_5f8cbc0eb6af7.pdf
    • https://tatogupuragafa.weebly.com/uploads/1/3/4/0/134096405/6239888.pdf
    • https://tazeviguso.weebly.com/uploads/1/3/4/3/134339516/gemelupuka_jaxizisaw_mumudixiwofa.pdf
    • https://cdn-cms.f-static.net/uploads/4385634/normal_5fa12b3b425a3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/widiku/67217355120.pdf
    • https://s3.amazonaws.com/poresi/biwivutowebalupebarorod.pdf
    • https://s3.amazonaws.com/ditiruz/albino_luciani_illustrissimi.pdf
    • https://s3.amazonaws.com/vokeri/mitch_albom_first_phone_call_from_heaven.pdf
    • https://s3.amazonaws.com/xarojapi/31738930667.pdf
    • https://s3.amazonaws.com/felasorarabipis/webokebazifixasevuzisi.pdf
    • https://s3.amazonaws.com/ritoma/descriptive_essay_samples_free.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000335ca.bin
1677775b48ebe5f301f8a5be7ad67b06d3d87d9e5bda3201aa5f4cadae7e16c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x335CA 5088 bytes
font_01_sfnt_off00034728.bin
5980c54307f73608c3f55160ca0d270c2a8a25ef430d1516652d9f5a6d1bca15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x34728 12344 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.