Malicious PDF — malware analysis report

Static analysis result for SHA-256 723d9eef291faa7e…

MALICIOUS

PDF

66.9 KB Created: 2020-12-20 01:24:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 546cf7e7d1ec87c889940249acde1953 SHA-1: 76e05bcdb2c98d63dfbc74b02a4d329225de4ebc SHA-256: 723d9eef291faa7edeb27dd6857829d7a89d61e3653ffb34ea31d8b4bef1c1aa
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, traffking.ru, which is likely used to host phishing content or further malware. The embedded URL and the ClamAV detection strongly indicate a phishing or trojan distribution attempt. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/123?utm_term=clash+of+clans+hack+without+jailbreak In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374954/normal_5f899477bceec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446770/normal_5fa37ea317b10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413850/normal_5fc34e6c1664a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479679/normal_5fd8689557820.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478393/normal_5faad6dd81883.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc6a831104edf1d77a95fd2/t/5fc9c2aed7c3040d8730b6b5/1607058095565/imposter_vision_and_crewmate_vision.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf559c1972c46e3c95bf85/1606374817369/magic_coffee_direct_sales.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5ac88ff13940aa260242e/t/5fd67e26ffab5d3c56feaa7c/1607892518942/74260963445.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd37006394b41d6424d862/t/5fde78daf11f517dbbc59ac1/1608415451834/mugupipafezixifazanapoluj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a12a6f01-ad85-47a1-8740-ac55e4554cc1/soravawifupedafiwo.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/fajeweru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d879d9b-7d8c-48be-b535-ff90545afd1a/ricardo_feltre_quimica_geral.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b716a3bf4b14abca1fb7/t/5fce2eda9aa2de0c64bdc97d/1607347930737/irancell_td_lte_login.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adc542a5-c385-4aaa-a741-75d7d435f847/fozaxazefosotode.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_off0000c8ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8EA 5248 bytes
SHA-256: 2bde4865331f025ee78d88a732c44c9809db38b77c8512f66c67b00b2f791b1c
font_01_sfnt_off0000dad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD0 10484 bytes
SHA-256: 0d365e02c1588263196eeca4f458deae10eec78d36bd3e18b8befbd4f5aa5989

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