Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde0186ac3ab8f3c…

MALICIOUS

PDF

42.5 KB Created: 2020-08-26 03:24:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78f7c4a03c6ede0cc61de41cb36a3ee5 SHA-1: e5ac2c8e5706b6c4bed6a90cf2c6b4a8f2dc6feb SHA-256: fde0186ac3ab8f3c30706011c98ce82d0fe8c00bf38be537fc7bcf8bb79d4a0d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body itself contains garbled text but also includes the same URL and a large number of links to PDFs hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is https://ttraff.cc/pify?keyword=8+s%25C4%25B1n%25C4%25B1f+matematik+soru+bankas%25C4%25B1, which is presented as a mathematics question bank to lure users.

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=8+s%25C4%25B1n%25C4%25B1f+matematik+soru+bankas%25C4%25B1
    • http://files.twosisterscandy.com/uploads/1/3/1/4/131407647/4503ec.pdf
    • http://lufabad.bubbasdeli.com/uploads/1/3/1/4/131437595/pobitobigujisal.pdf
    • https://cdn.shopify.com/s/files/1/0440/7384/4888/files/70586688722.pdf
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/dajemilufesalakolelavij.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/japoxotoruzub.pdf
    • https://cdn.shopify.com/s/files/1/0432/6011/7160/files/pathfinder_advanced_player_s_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/5788/0996/files/osteoporosis_colombia.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1122/files/active_passive_voice_in_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0432/0880/2466/files/battletech_miniatures_rules.pdf
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/food_adulteration_in_bd_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/3731/0632/files/bezudajabamenid.pdf
    • https://cdn.shopify.com/s/files/1/0429/2725/9811/files/rilexokusitumipiferi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9440/0414/files/82249549668.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0219/files/59620309296.pdf
    • https://cdn.shopify.com/s/files/1/0437/1136/5288/files/interview_questions_and_answers_tips.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_off00004dd3.bin
1e2b28568cda29503c5186295cf4beeca1d7d89f3f31fcbc435cae074eb4d089
pdf-font-stream PDF embedded font (sfnt) at offset 0x4DD3 5216 bytes
font_01_sfnt_off00005f75.bin
8f978b96c83f7300c356ff18948805b3c6676e9381b7cbcc002fefe843cbc5fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F75 12200 bytes
font_02_sfnt_off000085dd.bin
d4d64cc035a6f2f8c22fd9b63d2715b83ddd2fe0382e71ba2163dfd509edd2f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x85DD 16144 bytes