Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cbf38fbe63079f8…

MALICIOUS

PDF

40.1 KB Created: 2020-08-18 15:28:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd2b1b9c38aceca5d9df190bee1961b6 SHA-1: f33c6d610a7f8534d580177dd24930663639dbf5 SHA-256: 1cbf38fbe63079f86d4663672dbc91e86fa8d7924635574e87444f8fe3077113
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to a 'grievance procedure uk template' and urgency lures, suggesting a phishing attempt. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the malicious redirector.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=grievance+procedure+uk+template
    • http://files.carterfarmsrabbitry.com/uploads/1/3/0/9/130968996/6055c1d4e.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15900382268.pdf
    • https://cdn.shopify.com/s/files/1/0437/5537/2695/files/podoselumot.pdf
    • https://cdn.shopify.com/s/files/1/0432/2168/0283/files/14155930751.pdf
    • https://cdn.shopify.com/s/files/1/0433/8706/0375/files/a_textbook_of_analytical_geometry_of_two_dimensions.pdf
    • https://cdn.shopify.com/s/files/1/0432/0159/3502/files/lijukofarazexe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1983/7346/files/56892873547.pdf
    • https://cdn.shopify.com/s/files/1/0433/9938/1157/files/zezepu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/mebati.pdf
    • https://cdn.shopify.com/s/files/1/0437/3122/2682/files/funopijufererike.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/xevobujako.pdf
    • https://cdn.shopify.com/s/files/1/0445/5848/3620/files/gagobolufuzukanawip.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f9b.bin
d320d8dba289c6ffc42275f4c82e1845a6e1ae97938fbd19afe9b2b55f18ed51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9B 5196 bytes
font_01_sfnt_off0000713b.bin
00a942667c8adbb1fe78665dcd54c2cf8741ad8414bdec6f6d7efbf433d9c1d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x713B 10176 bytes

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