Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a01c9af8a11ddc9…

MALICIOUS

PDF

72.3 KB Created: 2020-12-06 16:03:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1490ea9ec912990ea5826bac8f177f84 SHA-1: 2c08a33548c89c05ceaa276fc2deede50249781a SHA-256: 9a01c9af8a11ddc973721ee5e95252cbf2048579252a439ddab4dae77638dc5d
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://gettraff.ru/123?utm_term=pathfinder+kingmaker+arcane+accuracy`. This URL is likely used to redirect the user to a phishing or malware distribution site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious link is sufficient to infer a phishing or social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/123?utm_term=pathfinder+kingmaker+arcane+accuracy In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gupuso/xemirawabejorut.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfe7e212facd59cea75dab/t/5fc16b0d4e98326c0245aa3e/1606511374102/34997867599.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e72ed053-fa00-46df-814a-fbc8afb9f5b5/pages_invoice_templates_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22de0cb2-133c-4907-9845-d4b936f7b1a9/keluwoxibasafurosuda.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13e7dd49dd12447366960/t/5fc6e3973d56556d142d9b17/1606869912338/wordpress_themes_for_travel_blogs.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/breakdown_voltage_of_transformer_oil.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0805cd49dd12447321748/t/5fc210954f98375720270fb4/1606553766580/blood_of_the_dead_map_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/i_am_statements_in_john_10.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc365ff104edf1d7790e6f0/t/5fc533f2f8cdb769c68bf924/1606759410717/lotro_cooks_guild_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a6c57b1-7a69-41af-a798-227214c6073f/descargar_adobe_audition_3.0_gratis.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1b4608845d092452b8de/1606294343928/sith_vs_jedi_old_republic.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d153.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD153 5164 bytes
SHA-256: ea0c63ad71c4e790447a12b1dab9a807e37206a5c7d6e971e8ea1734eaa296b6
font_01_sfnt_off0000e2b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B0 10420 bytes
SHA-256: a5b7972f98a062725ad28a565a3f55c7d1031b2d0e3d50c8002614bb379a8b36
font_02_sfnt_off0001063e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1063E 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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