Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe3d3a3f1291b75f…

MALICIOUS

PDF

43.7 KB Created: 2020-11-09 13:53:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5865c245df6b67fea87e03c4fa37467b SHA-1: 54d64e63fcc29fc8658e1d954e2c0d6a4ff9c61f SHA-256: fe3d3a3f1291b75f79f4fae2ebeefab744d34f773616c1e1798477c0075c9a00
76 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 malicious, specifically flagging an external URI and an SEO redirector link. The embedded document body text, though heavily obfuscated, contains a URL that matches the suspicious redirector. This suggests the file is designed to lure users to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafffe.ru/123?keyword=exploit+give+gun+script+roblox PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411696/normal_5fa804bcc7246.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419001/normal_5fa8020a108f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376874/normal_5f90db888c43e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393779/normal_5f9bf404103b6.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/dazutun/zixavi.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/weather_for_aircrews.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/84564762603.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/48718967538.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/85857395663.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/839dc917-09a3-404a-8d98-01fbc52403b4/1356063363.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/88566552541.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/causes_of_stress_at_work.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/whirlpool_tp-12_reverse_osmosis_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/7432983918.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/simuzifobinumejak.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_off00006c6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6C 5116 bytes
SHA-256: 1854333f2eb57d41690e0261c693d9ec6219a5db72427ff17babe36fe24f0705
font_01_sfnt_off00007df8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF8 10404 bytes
SHA-256: 83f425dbaae5a72d7756ffb6b9393b2caa26073163199cbdc89db3334311028d

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