Malicious PDF — malware analysis report

Static analysis result for SHA-256 e29bfd346e8a6c29…

MALICIOUS

PDF

54.4 KB Created: 2020-08-30 23:45:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36593da97d34b8a6ad0376ea7d543db6 SHA-1: eb4e386b0d6e893741cc0c6e9c900aa2fbdf6f82 SHA-256: e29bfd346e8a6c292060b20bb78498d49d69f3a5bd959709301a2ea220c62a2b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL, https://ttraff.com/wix?keyword=vindictus+additional+damage, is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

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.com/wix?keyword=vindictus+additional+damage
    • https://static.usrfiles.c
    • https://static.usrfiles.com/ugd/d5cf39_426491fdf48f46549087182c1b4ca17b.pdf
    • https://static.usrfiles.com/ugd/b8c837_f85d765a816a4ec080ce057d9bc9f162.pdf
    • https://static.usrfiles.com/ugd/03ae60_4e3b4beef76847679cd8249e9d7dbdb4.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad78fa24dd2d46dcaa99271bdc585643.pdf
    • https://static.usrfiles.com/ugd/b8c837_f2a30a9a72904156b09b47f6b151624a.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/five_steps_to_risk_assessment.pdf
    • https://cdn.shopify.com/s/files/1/0431/0866/3456/files/android_studio_architecture_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0431/0574/7095/files/firariwoja.pdf
    • https://cdn.shopify.com/s/files/1/0432/4920/5405/files/37716176734.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000894e.bin
bb0d07b9dbc9ac8dc74fe678c4ce29f4b3bd7645fa0ac80de736d7957106cb62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x894E 5012 bytes
font_01_sfnt_off00009a37.bin
2bb97c7cdea789bdd72809eaf52ccce5f217cbbd404169732e6473ee986c0ca4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A37 10672 bytes
font_02_sfnt_off0000bea9.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEA9 4324 bytes

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