Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cca1c60c82bac66…

MALICIOUS

PDF

47.1 KB Created: 2020-08-01 21:04:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ff7078acadadd4f7ebedab166cea735 SHA-1: 5b8d386a838be22e46b31a3321e85c0836423a80 SHA-256: 2cca1c60c82bac6698f458a733ee3e1895bf097e016ca66765cb6d930b91ad43
150 Risk Score

Malware Insights

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

The PDF contains a high density of embedded links, many pointing to external resources, a common tactic for SEO poisoning or redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the intent to direct users to harmful content.

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.cc/pify?keyword=shifty+eyes+emoji
    • http://files.gathermystic.com/uploads/1/3/0/9/130969260/tigijep.pdf
    • http://files.suzanneforcese.com/uploads/1/3/1/3/131380604/fumifizekex_lenekil_sewude.pdf
    • http://files.leoinyourkitchen.com/uploads/1/3/0/9/130969218/1161013.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/89044283291.pdf
    • https://cdn.shopify.com/s/files/1/0431/1711/7589/files/53491099437.pdf
    • https://cdn.shopify.com/s/files/1/0434/0567/2597/files/xunowewukutasuvap.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ligumugazawebamupewav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61927850068.pdf
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/23379676463.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84574839703.pdf
    • https://cdn.shopify.com/s/files/1/0429/3489/4755/files/vebaxivimob.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/menimawevivijisitira.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_off00007bd7.bin
431f64bdf523cc633527300808e2fcfb04fa8b3634ec0598dabf79a03510da87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD7 4952 bytes
font_01_sfnt_off00008c9e.bin
859cb8f2db6923d827c78425e9dde95677b4e6f60968b334fd0df024b136f97b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C9E 10268 bytes

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