Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5ba39e0fda4e094…

MALICIOUS

PDF

74.3 KB Created: 2021-01-06 09:18:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 7f7c6c2ead01641719483bde77e148b0 SHA-1: 2131ea064d065f521c47acc3114a996e0a6ff1e4 SHA-256: a5ba39e0fda4e0944e11d3f4fcb1f7d883d3e4256954c44f60aaa4d39846abf9
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 flagged as malicious by ClamAV and an ML classifier. It contains a high-severity heuristic indicating an image lure linking to an SEO redirector, specifically `https://traffnew.ru/aws?utm_term=android+bitmap+decodefile+out+of+memory`. This URL is likely used to phish for credentials or distribute further malware. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • 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=android+bitmap+decodefile+out+of+memory PDF link annotation
    • https://cdn.sqhk.co/jabosuve/hbgdsge/vesumumalasujafikebilonu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366401/normal_5f8759e5bde0a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378605/normal_5fe5e7b3c76f9.pdfIn PDF document text
    • https://cdn.sqhk.co/mogidamiko/jifzEYr/great_white_shark_wallpaper.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/226f1a86-c90d-4fac-9445-c9d1d07a04f6/anchor_bolts_design_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e95aad2-acfc-4f7c-a0c6-4fb647d7d80d/golf_league_tracking_software.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/acrobat_pro_dc_installer.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/luridiroretomubig.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/presonus_firepod_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/big_trouble_in_little_china_shirt_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/169a2a90-f46b-46d2-a27f-eb3a0645f797/elder_scrolls_daedric_princes_fanfiction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/321ea22e-5249-4c08-917b-2a098e3e824c/pathfinder_inner_sea_gods.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08af4f81-d1c6-431a-8dc1-f1cba5c4424f/zesipa.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD9E 5356 bytes
SHA-256: c60a42dc67abad18590da01827e25626e4f09527e045af7f317f303d3bd68ace
font_01_sfnt_off0000dfc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC5 11792 bytes
SHA-256: cc355a8f5760a33649255d06ed7eb2c119315791b97e21059a20cf671086817d
font_02_sfnt_off000107a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A1 16036 bytes
SHA-256: 354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb

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