Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb439196487b0b35…

MALICIOUS

PDF

78.1 KB Created: 2020-12-06 22:43:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 719c2af9fbfc92e91eff6399945e4182 SHA-1: 9158b3ab60985186331e851ee7d4d1eb3ab29bfb SHA-256: fb439196487b0b3539eb0ed31765d8915b38e8c12752dd9cf14e67212429abdc
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ggtraff.ru/123?utm_term=ark+how+to+get+element 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://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5df25147b148042ad195/1606376946827/pidabutodafupe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0082f22-66e9-492b-bdd9-1083e4bbf4c7/norelco_shaver_heads_sh30.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7159063393450185211d0/t/5fccf60a9aa2de0c64954152/1607267851854/29168799070.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffe9d5687f52b6b7c161f/t/5fc3fe2ceaf37e3b64183548/1606680108199/98486338639.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc07d836b97992eb55a0df7/t/5fca6d6d9e96e23453fee836/1607101806202/80278847397.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/soil_type_of_the_coniferous_forest.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/tumorememirob.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/tofulokejenax.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1129368612547ed5f20ea/t/5fc3c145e18c5c478e6e0788/1606664518711/vurixoman.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10b9cab79f442f22a6952/t/5fc6d3f4bfb90028be3e74a9/1606865909925/hockey_card_store_near_me.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0b3f1d49dd12447331c2b/t/5fc15b243f75b166430703db/1606507302261/naturefresh_air_purifying_bag.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F5 7096 bytes
SHA-256: edf901111a056ffa2282da98e615ad104d4d0d99163792d27da74c72981fac84
font_01_sfnt_off0000eb45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB45 4596 bytes
SHA-256: f0cd5690200ab681106eea16079eb371a0188010639b26c4d8b4a8b4d72f5435
font_02_sfnt_off0000facb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFACB 10064 bytes
SHA-256: fc16ded07a82a7013e76a8c6fe09ae1bbe43c47d59a7501bd7e13b62304e5a50
font_03_sfnt_off00011d67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D67 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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