Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad3d39eb5b387790…

MALICIOUS

PDF

70.1 KB Created: 2021-02-16 23:36:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b29950e8ff6be5949adbdc05bc5ebe03 SHA-1: f1b9df2be076e229a7d79ebf7cbd479d212e85ec SHA-256: ad3d39eb5b387790e0b67b816e58aa16803d210aaceb1c0c968314d8103dded9
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an external URI and an SEO redirector link pointing to 'https://seumenha.ru/wix?keyword=calphalon+toaster+oven+manual', suggesting a phishing lure. The document body is heavily obfuscated, but the presence of external links and the malware detection strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=calphalon+toaster+oven+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448744/normal_60257aa8f1104.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/nemakoziruz.pdfIn PDF document text
    • https://cdn.sqhk.co/lolajelor/1yJj839/pinball_machine_suppliers.pdfIn PDF document text
    • https://s3.amazonaws.com/fisulefajow/academic_year_at_a_glance_calendar_template.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416149/normal_5fdfc6853ccb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488804/normal_601b369b5dd50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367300/normal_5ff30d826afff.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/comparing_fractions_grade_3_worksheets.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470821/normal_5fdae80a3b9c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449603/normal_601d9a1b32cdb.pdfIn PDF document text
    • https://cdn.sqhk.co/kinemefuwa/iasjfih/neck_check_thyroid_gland.pdfIn PDF document text
    • https://cdn.sqhk.co/sunidoxil/hbifgjK/sotekanibaw.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/bonanza_episode_guide_season_5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421199/normal_602afd7f73a0a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418778/normal_5ff51a0bf144c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d72e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD72E 5024 bytes
SHA-256: 7b542d67d9b76809aaff5aa9dcb95bdd1c2ced5f0aee6a0b499428955ed43842
font_01_sfnt_off0000e816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE816 10332 bytes
SHA-256: a4ab711f6f3ba33c576a772919d27b39ac5d07341ce560bd6b2a950d6495df44

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