Malicious PDF — malware analysis report

Static analysis result for SHA-256 52dbee0ba0004c7c…

MALICIOUS

PDF

71.8 KB Created: 2021-01-03 07:05:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 10f1283716dc12305328c75c131d6aea SHA-1: efea11df4732413f6800c79e8e8be95e698a8d03 SHA-256: 52dbee0ba0004c7c6564082b9e4c170eae554013e2b4b24ec71b9018254b303a
176 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file is identified as malicious by ML classifiers and ClamAV, and exhibits characteristics of a phishing lure. It contains an external URI and an image lure pointing to 'https://trafftec.ru/aws?utm_term=win+10+32+bit+gratis', likely intended to trick users into downloading malware. The document also suggests a password-protected archive handoff, a common tactic to bypass gateway security.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://trafftec.ru/aws?utm_term=win+10+32+bit+gratis PDF link annotation
    • https://judirarizase.weebly.com/uploads/1/3/4/6/134645007/baladonoxeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365586/normal_5f9a593540890.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445114/normal_5fda1296df80f.pdfIn PDF document text
    • https://cdn.sqhk.co/disegivoji/Ngj5mul/rocket_man_song_meaning_drugs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413227/normal_5f9df5a32617a.pdfIn PDF document text
    • https://cdn.sqhk.co/birofinud/XC4XCTm/tolusafogepukezagefe.pdfIn PDF document text
    • https://cdn.sqhk.co/kagurase/T3Thg7v/gravity_definition_drivers_ed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3efaea7-217f-42eb-921a-2cf72ba5f752/37745292820.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fb094a1-069b-4e3b-be16-2c5193ef3331/36129747052.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/821d824b-f705-4159-a02a-c41435d6f031/kryon_2020_channeling.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_off0000dc44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC44 5464 bytes
SHA-256: a52a510612f9d9a210b3706a5d6fad5236bab76d61eea4e6d057152b90788af5
font_01_sfnt_off0000eef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF8 10652 bytes
SHA-256: da75d2cbb98f305436fbdf23b24d984112270f5449f8bb8cc458ba06471363d4

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