Malicious PDF — malware analysis report

Static analysis result for SHA-256 f14975859b8671fb…

MALICIOUS

PDF

47.2 KB Created: 2020-08-22 06:56:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 002164c5f151e91fc41e097ef5e74cb2 SHA-1: ca26bdf9f8ce9a5170a77dc29e8c4ea04b82f990 SHA-256: f14975859b8671fbd3c52fdfeaa4ad51b68951603e672e0ed5a7c07e890d688b
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented within the document body, suggesting a social engineering lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL is 'https://ttraff.com/pify?keyword=google+sheet+functions', which likely serves as a gateway to further malicious content.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/pify?keyword=google+sheet+functions
    • http://files.kivacharter.org/uploads/1/3/0/8/130874110/zipazeladojom_mukunogabor_nolitem.pdf
    • http://files.amyziserevents.com/uploads/1/3/1/8/131856270/2b8e1fc.pdf
    • http://gopusu.thefabriclibraryenniskillenltd.com/uploads/1/3/2/7/132741099/516e53a0cb.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31931154882.pdf
    • https://cdn.shopify.com/s/files/1/0431/0777/8711/files/kasozin.pdf
    • https://cdn.shopify.com/s/files/1/0461/7994/2553/files/best_videohive_templates.pdf
    • https://cdn.shopify.com/s/files/1/0428/5313/8591/files/7907841450.pdf
    • https://cdn.shopify.com/s/files/1/0431/1610/1793/files/85878070728.pdf
    • https://cdn.shopify.com/s/files/1/0433/6284/4837/files/tijimure.pdf
    • https://cdn.shopify.com/s/files/1/0433/4262/6984/files/35208918141.pdf
    • https://cdn.shopify.com/s/files/1/0435/7275/6648/files/buddhist_philosophy_free.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_off000071b9.bin
fa2db1ac8b9a8a307ae76569d40d70f98f9fafa8122e0ef92fb1740b44fd9342		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71B9 4868 bytes
font_01_sfnt_off00008250.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8250 1800 bytes
font_02_sfnt_off00008ade.bin
068353c0240ace5f1ac0175d3df8defe24c917293e4e45bdd4a881d0aeb29a99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADE 11032 bytes

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