Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6534cfff2907f88…

MALICIOUS

PDF

65.4 KB Created: 2021-03-02 08:12:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 36cfc9cb86a78f4b1cb22306ba2c30d0 SHA-1: fccdcb470ea524e232161ed9f13831a611164eb6 SHA-256: f6534cfff2907f888e1b96d09076f18dd3a0906ca67e17cffe366dcb4b7dcbd5
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains heuristics indicating it is a phishing lure, specifically using an image to redirect users to a malicious URL. The embedded URL and the document body, though heavily obfuscated, suggest an attempt to trick the user into downloading further content or visiting a phishing site. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8125

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
  • 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
  • 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://golowaki.ru/award?keyword=do+you+need+a+fitted+sheet+for+a+pack+and+play PDF link annotation
    • https://cdn.sqhk.co/wuvexudid/ibifeji/ringtone_punjabi_song_download_pagalworld_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/dusawugivepo/fCifhi7/23181755454.pdfIn PDF document text
    • https://cdn.sqhk.co/pirujezexod/gheiajb/neborij.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452624/normal_5fe1b6d608197.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476434/normal_5fcd402bd9f9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485800/normal_600f0c87d8b77.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zulonojaminipe.rf.gd/65218651032.pdfIn PDF document text
    • http://worurekebisur.rf.gd/45110625307.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/nogusidupujikoku.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/faruwanogu.pdfIn PDF document text
    • http://nefotux.epizy.com/bob_ong_si.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/can_t_photoshop_free_trial.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/he_giveth_more_grace_hymn_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/87514266883.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE348 5408 bytes
SHA-256: 5533aff505930d11aa173769f3a98b834aedc3e3472a99a284ceb37eab5e94ab

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