Malicious PDF — malware analysis report

Static analysis result for SHA-256 3126d5b97dfab491…

MALICIOUS

PDF

63.0 KB Created: 2020-11-24 15:48:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: eaf40c0d0125903b2da2f093894aa9dd SHA-1: 937c3e83438061f3ef14e6861fb987c568a2ad2c SHA-256: 3126d5b97dfab4914a2efe802e036c52dcbaf8300033e567a3ae1610eeaebf7a
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 'traffmen.ru'. The ML classifier also strongly flagged this PDF as malicious. Although no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery.

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://traffmen.ru/strik?utm_term=3d+photo+viewer+download In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/zinodogizopinexamakogi.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/2014_nissan_altima_factory_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/581361958.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/403233b4-634a-40ff-83a4-6d6de859a3de/safezivubupurivo.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/sportsman_s_warehouse_anchorage_hours.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/40990683484.pdfIn PDF document text
    • https://s3.amazonaws.com/xafuluxel/giwujilizivokine.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/hasbro_micro_machines_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e085735e-dd61-4b2d-8f49-76776ffe7c48/5668124571.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33a91de5-4a36-443d-af2d-b0c20db6fb45/vusivalejagewaguto.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/pixogijixexixijopi.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/solar_group_mailbox_replacement_flag.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/seacoast_newspaper_nh.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/wamuvatiponug.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_off0000bab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAB7 5092 bytes
SHA-256: 030834bafcee7902fd72553a5fa9e3b7a8d7f9244c0218a35bc097bd9dd39bf4
font_01_sfnt_off0000cc16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC16 10356 bytes
SHA-256: 7fb6c1b74173e36ab85fc31e0e181023cf180a0baf7ab50f36a5edd3e726dd52

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