Malicious PDF — malware analysis report

Static analysis result for SHA-256 f315bb8c39310630…

MALICIOUS

PDF

40.4 KB Created: 2020-08-06 13:11:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c8b2d4f871cab9520efb0a942ed1d9f SHA-1: 1322513cff0db7315c65363eb01b73fe7a7b712b SHA-256: f315bb8c39310630c7d15b92137e1d8923834c9f9523cba51689cf516aa1ba9d
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm or SEO poisoning attempt. One critical heuristic identified a direct link to a known malicious redirector, ttraff.com, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic, reinforcing the attack pattern.

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.com/pify?keyword=catalogue+daikin+air+eau+2020+pdf
    • http://files.moraystore.com/uploads/1/3/1/4/131454286/sozes-zokabetivit.pdf
    • http://kukulot.bblifeinsurance.com/uploads/1/3/0/7/130738799/9555365.pdf
    • http://files.stupindouscreations.com/uploads/1/3/0/7/130739831/fisudosomug_jogagane_bopebag.pdf
    • http://files.searchlightforensic.com/uploads/1/3/1/4/131407668/bizevixidixa.pdf
    • http://files.virtuallysmoothpiano.com/uploads/1/3/1/8/131857920/1833890.pdf
    • https://cdn.shopify.com/s/files/1/0438/1681/2706/files/wupujuradipokadotulute.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51686393220.pdf
    • https://cdn.shopify.com/s/files/1/0429/8647/1587/files/xoxedunigitidusibisug.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8167/files/33461158996.pdf
    • https://cdn.shopify.com/s/files/1/0434/2562/8327/files/pandaria_skinning_trainer.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jikas.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85155057715.pdf
    • https://cdn.shopify.com/s/files/1/0435/9146/7176/files/perabad.pdf
    • https://cdn.shopify.com/s/files/1/0432/0487/0305/files/courage_to_be_disliked.pdf
    • https://cdn.shopify.com/s/files/1/0430/5004/1495/files/nujelibidel.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/nuzovimoxagedudasajonof.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_off00004cb0.bin
043b31a83f580c806598db74255adb37c9d365164cb457bc2c06d7414bcaabc7
pdf-font-stream PDF embedded font (sfnt) at offset 0x4CB0 5272 bytes
font_01_sfnt_off00005eb0.bin
83fd354884f86cdbc62c59c9134af84e285b6936e6051f0873c20891e2f86a96
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB0 12656 bytes
font_02_sfnt_off000084ae.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x84AE 4324 bytes