Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7383bfa359534da…

MALICIOUS

PDF

68.4 KB Created: 2020-11-24 22:48:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 746a5c3e78418d64da88eef90098ad39 SHA-1: e1167db134878980fc54b42dca88d567dbd14b5c SHA-256: c7383bfa359534daafb37ecaa882c58a356aee525e48c114735eb967d62ec778
154 Risk Score

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 'gettraff.ru'. The embedded URL is disguised as a free download for 'Star Wars age of rebellion pdf', a common lure for phishing or malware. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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=star+wars+age+of+rebellion+pdf+free+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f873d693cf28.pdfIn PDF document text
    • https://ditoxinenibon.weebly.com/uploads/1/3/4/3/134324582/2140507.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379049/normal_5f9c259729be5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465393/normal_5faac29a12054.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389365/normal_5fb4fafa81db0.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/748bd211-8834-4d73-ae09-8dd49e4edb70/toxojak.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/26814495717.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/29011685555.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bca1c27e-a604-4da6-a11c-9a185a9498db/68531712442.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d05ac154-76ba-40fe-8af6-f4126e3b901e/cracked_adobe_premiere_pro_cc_full.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_off0000ce19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE19 5544 bytes
SHA-256: 489c5ed90e4457d77f9fac30dacdaf2be1a2295b3429b8f6ce46802da12a1764
font_01_sfnt_off0000e10b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE10B 10536 bytes
SHA-256: d2c6ad2f0fc93c5c62e95198c89e463b07a53400359963e0fdf8391f42a0b031