Malicious PDF — malware analysis report

Static analysis result for SHA-256 838720f5636d5800…

MALICIOUS

PDF

69.6 KB Created: 2020-12-23 01:07:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: e0185a7ea5401d5e1cb05f658d40bddd SHA-1: 1bd38bb1b6433f99c2df1d867c26c72abf75d442 SHA-256: 838720f5636d5800ccf2ccce180b527050a35efab6a6fcd17ef36e58aac31945
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it is a phishing trojan. It contains an embedded URI pointing to 'trafficel.ru', which is likely part of the attack chain. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9586

Heuristics 3

  • 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
  • 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://trafficel.ru/aws?utm_term=ac+milan+2005+formation PDF link annotation
    • https://kutusavirub.weebly.com/uploads/1/3/4/2/134265758/lejizujife.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471106/normal_5fc86d76bd07f.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/fadobirak/bifajejeve.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/pavedupe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7c43e5b-734e-46e9-b5f1-562b760833ca/blank_map_of_india_political.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/801a13ce-367d-4344-93e3-e40e8364bf4f/meridifa.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/43197333357.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/candida_krusei_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/76779179622.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/mii_maker_rom_3ds_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6e1b204a8c57c1486e423/t/5fd5f64872b1137fa96adb93/1607857737317/42506087653.pdfIn 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_off0000df59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF59 5236 bytes
SHA-256: 2a19a06b480cc5eb77b3632d98a353bca73a3cc49ce1534f99627b404e0b34f9
font_01_sfnt_off0000f11d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF11D 12200 bytes
SHA-256: 512ef2c23393b465cfa54700bb572cfe1b2adb367d9646dc2bc5d942ffa23ff9

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