Malicious PDF — malware analysis report

Static analysis result for SHA-256 5116b88709894bca…

MALICIOUS

PDF

77.1 KB Created: 2021-01-12 10:34:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: f6dd78b1936f198e76807a821663c669 SHA-1: 8741222759e2e75174fdc55b663cabdff84e2331 SHA-256: 5116b88709894bca097e2021e7b0ffdcbf7e50684cd148f4039eede0389eb467
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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://traffmen.ru/aws?utm_term=bounce+dryer+sheets+uses'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL within the document body indicates an attempt to lure the user to a harmful site, consistent with phishing or 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://traffmen.ru/aws?utm_term=bounce+dryer+sheets+uses In PDF document text
    • https://cdn.sqhk.co/girewobo/DFihjhX/nalozebofokokomilik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369333/normal_5fc629aa4473e.pdfIn PDF document text
    • https://site-1177382.mozfiles.com/files/1177382/maplestory_ark_class_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365606/normal_5feec4a879e7c.pdfIn PDF document text
    • https://cdn.sqhk.co/jajotulix/idjeUji/18163522805.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarasam/jbjaVgf/26550673511.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/galinikagopit/terafovajije.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/wikudevejip.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/qualities_of_a_transformational_leader.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/uppercase_letter_a_tracing_worksheets.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_off0000f404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF404 4936 bytes
SHA-256: 55d3724141d2282528560b8b89697324e0064b29e7f16b187bc97516e97b5d66
font_01_sfnt_off000104d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104D4 10412 bytes
SHA-256: 6f7d067fa637842deb7041c572e14bafc9160f59fee7b1f139e3cfcf6efba85a

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