Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4026db82fe59649…

MALICIOUS

PDF

50.8 KB Created: 2020-08-21 07:17:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04b703d930a77090a3d0f487ade5ef2a SHA-1: 3c33a9764c8545a65a9606439640e47864267d7d SHA-256: c4026db82fe59649e45c92536cf225fc8238802939c57375298b8543026da33d
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.cc'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one leading to a potentially malicious redirector. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded malicious URL is the primary indicator of compromise.

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.cc/pify?keyword=jinja+template+example+ansible
    • http://latukamun.peacelovehappydaze.com/uploads/1/3/2/8/132814930/4d3e06d.pdf
    • http://files.suzannewilliamson.net/uploads/1/3/1/4/131407111/3141609.pdf
    • http://files.momsarefrommars.com/uploads/1/3/0/7/130738565/peruvawiluligigaj.pdf
    • https://cdn.shopify.com/s/files/1/0436/3884/9694/files/amumu_jungle_guide_german.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xazome.pdf
    • https://cdn.shopify.com/s/files/1/0439/9231/8110/files/javatad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/vitixud.pdf
    • https://cdn.shopify.com/s/files/1/0435/9625/1304/files/86360683905.pdf
    • https://cdn.shopify.com/s/files/1/0433/4403/5993/files/speedball_calligraphy_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/7609/1046/files/ajax_datatype.pdf
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/12135699448.pdf
    • https://cdn.shopify.com/s/files/1/0437/1673/9222/files/79877091892.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/mevakirejes.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_off00007479.bin
0214813bbc795f91002c6f831deae202943923e681bdc9825a650fbcf42e8ad3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7479 5144 bytes
font_01_sfnt_off000085da.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85DA 1800 bytes
font_02_sfnt_off00008e68.bin
85785906d41e3cab5074a3f873aa0fd87c22a206cf104ecb8eb3ca3498bd64c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E68 15072 bytes

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