Malicious PDF — malware analysis report

Static analysis result for SHA-256 36d05ca2d6776abf…

MALICIOUS

PDF

72.7 KB Created: 2021-01-29 12:02:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: ea28e4aaad38c3468b65595f249c5767 SHA-1: fc2c4a87e02f079f3dacbf7bab93c1bb947c8cfe SHA-256: 36d05ca2d6776abfe216cd037cd6a9c3355e4769a5e871a35d12b9ad07583ffc
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, with high confidence. It contains a heuristic indicating an image lure linking to an SEO redirector, suggesting a phishing attempt. The embedded URL leads to a domain associated with free-download phishing, likely aiming to trick users into downloading further malware or providing sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/123?utm_term=pathfinder+sylph+guide PDF link annotation
    • https://cdn.sqhk.co/pebekaja/Khaaeje/73818565747.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366389/normal_5fe5d18728502.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453103/normal_5ff3316e73e52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370307/normal_5fd289e8a29a2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494417/normal_5ff50c9b68fbf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407062/normal_5ffed3b6d0112.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372702/normal_601341a922b34.pdfIn PDF document text
    • http://fitness-ital.fun/69186108406nonjv.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/pirosisob/best_unlocked_android_phones_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/nutasuduk.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/incoming_outgoing_money_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/kusuvebopofixoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/xinurusepijagamotupaj.pdfIn PDF document text
    • https://s3.amazonaws.com/lusegokaves/46837824326.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/anjali_anjali_pushpanjali_telugu_song.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_off0000e071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE071 5408 bytes
SHA-256: 32f656e67e1e732886654c9d71333b748ecfa64be05c86f1126bd2ba0b8fcbbd
font_01_sfnt_off0000f2db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DB 10320 bytes
SHA-256: 4d93e8c23c88cb060a25365a7352443eb58b601dc782c811de4970a54e59371a

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