Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd44faf8bf3f7610…

MALICIOUS

PDF

35.1 KB Created: 2020-08-18 14:27:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4628cdb095b90ff237a221e0a70626e SHA-1: 0942449297522abf7fe04e26649832d19b6f3214 SHA-256: bd44faf8bf3f7610f0d6149f4395af8950213814740306b2bf55bc344870d10a
128 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text referencing a 'pirate hat template' and the malicious URL, suggesting a social engineering lure. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many hosted on Shopify, which are likely part of a link farm to improve search engine ranking for malicious content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=pirate+hat+template+for+adults
    • http://files.lifewithpetsgci.com/uploads/1/3/1/3/131380480/nasitawomekefaforepo.pdf
    • https://cdn.shopify.com/s/files/1/0440/5651/0616/files/turutesideferegepifovudil.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/lovoxeviw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefopevepal.pdf
    • https://cdn.shopify.com/s/files/1/0431/3474/6781/files/monster_manual_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/3433/7695/files/8801061674.pdf
    • https://cdn.shopify.com/s/files/1/0439/9307/1774/files/mekugepolosotomor.pdf
    • https://cdn.shopify.com/s/files/1/0431/8652/0224/files/38758947842.pdf
    • https://cdn.shopify.com/s/files/1/0430/1163/7401/files/ford_vs_ferrari_movie_rating_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/7832/8224/files/vazoresimibuve.pdf
    • https://cdn.shopify.com/s/files/1/0437/4711/5157/files/pressure_points_in_human_body_with_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0428/1607/7991/files/juzevo.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_off00004ca9.bin
e9043653dae2af8cf43ec54fa76c79a3448840a3aaa4bd02011f4bf73cf98271		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CA9 5280 bytes
font_01_sfnt_off00005e70.bin
d043b8644d8b117e4ce1bd3b215489599efdb9cf486d822bec40d7452a3587f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E70 9756 bytes

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