Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9515f22d5769d5d…

MALICIOUS

PDF

48.1 KB Created: 2020-08-20 06:44:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 890218898288e56b07ff96705b469f98 SHA-1: 3d88ea6196dd9d8bc449a7b1617fb0505ba3ef80 SHA-256: c9515f22d5769d5d8d20ac798b7913ebf639e6388db983eeda6d2233ebf8033a
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one critical heuristic identifying a link to a known malicious redirector infrastructure at https://ttraff.com/pify?keyword=catch+me+if+you+can+trailer. The document body, though heavily obfuscated, also contains this URL and references a movie trailer, suggesting a lure to entice users to click the malicious link. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the ultimate destination.

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=catch+me+if+you+can+trailer
    • http://files.trailofhumanity.com/uploads/1/3/0/9/130968981/desewaxajaf_nekobezefube_gazudubogabi.pdf
    • http://files.mrquerino.com/uploads/1/3/2/6/132681452/puviwafexuwa_gakevabewobag_pitimajugokaror.pdf
    • http://kefenazi.taiwancarparts.com/uploads/1/3/0/8/130874038/1074585.pdf
    • http://files.tiptaetip.com/uploads/1/3/1/6/131636941/xonat.pdf
    • https://cdn.shopify.com/s/files/1/0434/7772/9442/files/tazoxowenizamodawevumafus.pdf
    • https://cdn.shopify.com/s/files/1/0437/8374/9781/files/jarudiziwox.pdf
    • https://cdn.shopify.com/s/files/1/0432/2587/4600/files/wapukozalajexugagisexu.pdf
    • https://cdn.shopify.com/s/files/1/0435/9654/6216/files/tricky_math_education.pdf
    • https://cdn.shopify.com/s/files/1/0430/8254/7361/files/29479270362.pdf
    • https://cdn.shopify.com/s/files/1/0440/7971/0360/files/61167070730.pdf
    • https://cdn.shopify.com/s/files/1/0431/5280/1943/files/4454746915.pdf
    • https://cdn.shopify.com/s/files/1/0432/7945/0272/files/bulijowosovujisesokuga.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/36000258002.pdf
    • https://cdn.shopify.com/s/files/1/0429/7293/8399/files/18364410658.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_off000068d9.bin
403aa51b66b0eaadbb7d49236fccbd3f89a0a36e7655d2e702a5f8064588c9c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68D9 4948 bytes
font_01_sfnt_off0000798f.bin
2449d95e7ab8b1b88d8df52dca9632fd1f31399c8b77a48d171468137353674a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x798F 10088 bytes
font_02_sfnt_off00009c4c.bin
7ed423fd6f64a2accaab24a388a557cab9318e50e2ef4475c53ca1e35efe0f17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C4C 16632 bytes

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