Malicious PDF — malware analysis report

Static analysis result for SHA-256 369a24b764c07352…

MALICIOUS

PDF

39.3 KB Created: 2020-08-20 19:23:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffca4d55f287a12dcba71a017037ecb5 SHA-1: 0e2e1d1f086ec0eadb1409b244ffbb3792889780 SHA-256: 369a24b764c07352ab41ae8526a4da98972527c8fbfe513e5516c24520d66e80
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=cable+tray+installation+guide+pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, with 'https://cdn.shopify.com/s/files/1/0440/2744/5398/files/58678971677.pdf' being the first listed. The document body, though heavily obfuscated, contains the same redirector URL. The primary intent appears to be directing users to malicious infrastructure.

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=cable+tray+installation+guide+pdf
    • http://kozuzuno.bzdickstudio.com/uploads/1/3/1/3/131379730/kabub.pdf
    • https://cdn.shopify.com/s/files/1/0440/2744/5398/files/58678971677.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9166/files/547938223.pdf
    • https://cdn.shopify.com/s/files/1/0437/6428/5601/files/pakusevoxotemusinotevexuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/5704/4890/files/dasudofa.pdf
    • https://cdn.shopify.com/s/files/1/0458/9921/9098/files/bikabuzexanagejodugiduli.pdf
    • https://cdn.shopify.com/s/files/1/0433/5904/3749/files/rujudujudobevowalijamefad.pdf
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/naruto_shippuden_episode_282_english_dubbed.pdf
    • https://cdn.shopify.com/s/files/1/0432/8069/5462/files/bhangra_dhol_mix.pdf
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/29717693884.pdf
    • https://cdn.shopify.com/s/files/1/0429/0890/9734/files/enduring_power_of_attorney_template_western_australia.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nomevorijodasulalo.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_off00005cee.bin
f78bd15d34ead8289d73fa48b5361a3885d5f60c2d6addef99fd81a319adc987		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEE 5356 bytes
font_01_sfnt_off00006f35.bin
cd1d684ed25c0cf143892fc34322c2824d0d43b3ed86094c2898d70a1af84bf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F35 9740 bytes

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