Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d85469819cde8a3…

MALICIOUS

PDF

52.8 KB Created: 2020-08-31 05:00:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 546698067b13adc592c2d88fdd855ba4 SHA-1: b860cf7ffbbabc9e4d095740f78888ce0cf853a4 SHA-256: 3d85469819cde8a3a2b2c2dc1b061bce79b264f8e0725077467e3ae3c2d2c56d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. The primary malicious link directs to 'ttraff.com', which is flagged as a known malicious redirector. The document body itself is heavily obfuscated but contains the malicious URL, suggesting an attempt to lure users to a harmful site.

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/wix?keyword=ic-706+manual+service
    • https://cdn.shopify.com/s/files/1/0437/4154/4599/files/zip_codes_longitude_latitude.pdf
    • https://cdn.shopify.com/s/files/1/0431/9540/0349/files/33258129738.pdf
    • https://cdn.shopify.com/s/files/1/0429/5272/0543/files/ford_2600_tractor.pdf
    • https://static.usrfiles.com/ugd/b8c837_32bc560b756d44e78d1964fecf29cc72.pdf
    • https://static.usrfiles.com/ugd/f09a9d_4a3e14dbb7f1442d8904bfc309a1238e.pdf
    • https://cdn.shopify.com/s/files/1/0435/8068/6495/files/86526747849.pdf
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/jobs_and_occupations_vocabulary_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0437/7716/3426/files/fuxosa.pdf
    • https://cdn.shopify.com/s/files/1/0429/3361/6803/files/gekakegukedefogiteri.pdf
    • https://cdn.shopify.com/s/files/1/0429/0831/9903/files/craftsman_weedwacker_parts.pdf
    • https://cdn.shopify.com/s/files/1/0464/6171/4584/files/makejowagaza.pdf
    • https://cdn.shopify.com/s/files/1/0439/9208/8734/files/58992353461.pdf
    • https://cdn.shopify.com/s/files/1/0440/7849/7944/files/gogutaxifatezogekot.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_off00008d84.bin
51c48d22d742133498ac36399d6c93c76b2747cfa182493e2c35fc211b3fa5ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D84 5348 bytes
font_01_sfnt_off00009fa4.bin
d0f482a9908c542da5942758bbf8b138bf6337c9b1174148e63449ac89b579ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FA4 11768 bytes

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