Malicious PDF — malware analysis report

Static analysis result for SHA-256 9593a1d235f397a5…

MALICIOUS

PDF

82.5 KB Created: 2021-01-15 00:40:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: fbbcb9bae7b703d11e9a6e8cf81cda7e SHA-1: 6ffdc6f4a4ad060b4dd87ce1cf4e308ba2959841 SHA-256: 9593a1d235f397a5d517c23fa8e8112e5b9d3824c420fe014dade71ada219ed2
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged as malicious by a machine learning classifier and ClamAV with a signature indicating phishing and trojan behavior. It contains an embedded URL pointing to 'traffset.ru', which is likely part of a phishing lure, potentially disguised as a 'best cover letter template word'. The presence of a visual download button heuristic further supports the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffset.ru/aws?utm_term=best+cover+letter+template+word PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370561/normal_5fc4975ef0956.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425229/normal_5ffb8be43a394.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462993/normal_5fd3abdf6c83b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463286/normal_5fdf195433ca7.pdfIn PDF document text
    • https://cdn.sqhk.co/zijikunu/d4ayJge/42935509265.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402250/normal_5fe06e98c8174.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460972/normal_5fd885760a67c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459027/normal_60000d552f10b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405186/normal_6000c0f1ef9e2.pdfIn PDF document text
    • https://site-1200104.mozfiles.com/files/1200104/nadobexezejado.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473971/normal_5fce5072e4ba6.pdfIn PDF document text
    • https://site-1171643.mozfiles.com/files/1171643/75643355959.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/mupukesunobaga/83788466469.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_off000104d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104D0 5420 bytes
SHA-256: 7b7d1cf1b23f6b08946025412877bdd3aed154b61eefe16d219d6863888abc0c
font_01_sfnt_off0001173e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1173E 11296 bytes
SHA-256: fe78f94fcc6863493b1417bff56cebafbf837ef9b02aa3dde3128b00637b7cd7

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