Malicious PDF — malware analysis report

Static analysis result for SHA-256 22abae1f6f4c3dd5…

MALICIOUS

PDF

79.7 KB Created: 2021-01-08 09:49:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 26e7ef7e16e50e09160e12e9cb8c362d SHA-1: 2105ad578ec3331e36358c7f4593807616675a26 SHA-256: 22abae1f6f4c3dd591202fdfcf48c152617d12db11ce978a07047664124b4afb
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 identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL that acts as an SEO redirector, likely intended to lure users into downloading further malicious content under the guise of 'short notes'. No scripts were extracted, but the PDF structure and heuristics indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffnew.ru/aws?utm_term=biology+form+4+chapter+6+short+notes PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417426/normal_5fcda1af6dfd9.pdfIn PDF document text
    • https://cdn.sqhk.co/sulubejes/ugcelaE/coda_music_stomp_apps.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381752/normal_5fa2689dc5bf2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389820/normal_5fab3604db1e6.pdfIn PDF document text
    • https://cdn.sqhk.co/nanuvoxeva/gipdhjU/commercial_aquaponics_design_plans.pdfIn PDF document text
    • https://cdn.sqhk.co/gitopedevid/9geMHhd/playstation_4_for_sale_near_me_used.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/c83e413d-12d9-4cf7-90ab-b98075f1221d/kizulajanoruf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28c90c57-14b4-4533-9a53-3967fcaefa5d/dead_mans_cell_phone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95e6e207-00c6-45bc-83de-b750b1f01168/talib_kweli_torrent.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/xebefogudesitiw.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_off0000f8c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C7 5820 bytes
SHA-256: 743dbab763965263a09574ef14ce704e2205f6c9449a2ead389217add9280fb1
font_01_sfnt_off00010c88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C88 10536 bytes
SHA-256: 4268e5e20e4dadf49f8acbd89d95b29dc8bce9f1954de42bb715430c1d9fb153

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