Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3688748c7894d89…

MALICIOUS

PDF

34.5 KB Created: 2020-11-05 12:41:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6240c3724ba035da7fd6b6ee8a8e3638 SHA-1: 950a5e36b967e9c15020557d85f9cf16c06179d1 SHA-256: e3688748c7894d89006bbd5c53da89d4e1c381452bb92a3e03113975b434eb2c
94 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The ML classifier also flagged this PDF with high confidence. The embedded URL, 'https://ttraff.club/123?keyword=22re+timing+chain+guides', likely leads to a phishing or malware distribution site, indicating a spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://ttraff.club/123?keyword=22re+timing+chain+guides
    • https://rusuligoxajikug.weebly.com/uploads/1/3/4/3/134399392/4c6d028e02a9aa0.pdf
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/3808383.pdf
    • https://cdn-cms.f-static.net/uploads/4409405/normal_5f953d13405ea.pdf
    • https://nuvetifozeg.weebly.com/uploads/1/3/4/3/134358797/meselipezetonow_wigokomo.pdf
    • https://cdn-cms.f-static.net/uploads/4387036/normal_5f93e430f3ca1.pdf
    • https://nomuxivobuga.weebly.com/uploads/1/3/4/4/134483798/1780122.pdf
    • https://cdn-cms.f-static.net/uploads/4410731/normal_5fa3b4ea32fc6.pdf
    • https://cdn-cms.f-static.net/uploads/4423460/normal_5fa2a763cd2cc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f69dd333-86f0-44f9-a890-8dcbdf67af85/7136343571.pdf
    • https://uploads.strikinglycdn.com/files/7ff4a52a-2a0a-4971-9f6d-c7c03e363ec7/guided_muskie_fishing_lake_minnetonka.pdf
    • https://s3.amazonaws.com/pezofut/formulaire_dclaration_cnss_maroc.pdf
    • https://s3.amazonaws.com/bifadiwuwileji/71472656369.pdf
    • https://uploads.strikinglycdn.com/files/1d8d1770-c0fb-4732-b712-60b794a22b35/runuw.pdf
    • https://uploads.strikinglycdn.com/files/04394549-04bd-4a61-b645-993d4d788213/fofuj.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047a4.bin
107f899feeedadaaeba88c76742e4aab5a4df5ca10e4acb4e75f051a3ce4e09d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47A4 5360 bytes
font_01_sfnt_off000059ae.bin
1a63641c5fa78ef93f40c8ead9d83e11ee6e5742d4ac335602c3a0d1bf0bfc53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59AE 10464 bytes

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