Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb19e0af263a9329…

MALICIOUS

PDF

40.6 KB Created: 2020-08-09 22:00:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be1b08841a23b052a08bba608b99b1b1 SHA-1: 6fd2996c1186c46bd55148b282d71072c7cf6a49 SHA-256: bb19e0af263a9329874b0bb77d78cafc28ee1a4942a5abe6e60c5507c0c14dec
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a critical heuristic firing for a malicious redirector link to 'ttraff.ru'. Another critical heuristic indicates a PDF link farm, with many links pointing to shopify.com domains. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL and appears to be generated by wkhtmltopdf, suggesting a programmatic creation for malicious purposes.

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.ru/pify?keyword=auditoria+independente+pdf
    • http://files.weighthefacts.org/uploads/1/3/2/6/132683040/0e53ceb.pdf
    • http://pebiluf.cc-sac.org/uploads/1/3/1/4/131452977/livek-kixokekexomupog-xuboxa.pdf
    • http://zuwawa.adventuredayspetcare.com/uploads/1/3/2/7/132712615/e74dd2e667a196f.pdf
    • https://cdn.shopify.com/s/files/1/0428/4825/6156/files/dizalasesokarini.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/p_h-_protocol_valassis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97253363073.pdf
    • https://cdn.shopify.com/s/files/1/0432/6598/2632/files/xujimujipubumug.pdf
    • https://cdn.shopify.com/s/files/1/0432/7030/7995/files/1603106039.pdf
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/gorofenovabivigu.pdf
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/bovowejanefom.pdf
    • https://cdn.shopify.com/s/files/1/0434/9945/4628/files/61779901588.pdf
    • https://cdn.shopify.com/s/files/1/0431/1983/7345/files/1137947341.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/reragijod.pdf
    • https://cdn.shopify.com/s/files/1/0434/0187/1512/files/just_play_bridge_4_hands.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_off00006258.bin
183912f01298ef13c33f17050b8a0f8af094c384784351e65f81b492f081a440		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6258 4812 bytes
font_01_sfnt_off000072c4.bin
57dd6690d25d3b47b3aab98cb440672ddf3ced14cfc7a8768547a6cf2ee4dd7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72C4 10288 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.