Malicious PDF — malware analysis report

Static analysis result for SHA-256 8613ee9a6d6a27e8…

MALICIOUS

PDF

37.8 KB Created: 2020-08-31 05:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c0502cf24f948c9adff5dcdaa8aa128 SHA-1: ce3a529bd17ec5022b8dc65fa44650ef5d1772b2 SHA-256: 8613ee9a6d6a27e8b89854273fdee58141370826a5ea33c0b5453ccea910ea3c
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing numerous embedded URLs. One prominent URL, 'https://ttraff.ru/wix?keyword=new+roads+catholic+community', is flagged as a malicious redirector. The file's structure and the high number of external links suggest an attempt to manipulate search engine results or direct users to potentially harmful websites.

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.ru/wix?keyword=new+roads+catholic+community
    • https://static.usrfiles.com/ugd/b8c837_7430bd5b64ba4af181249ef819609fc0.pdf
    • https://static.usrfiles.com/ugd/b8c837_126e144c5ecc440babe735d92e7e5aeb.pdf
    • https://static.usrfiles.com/ugd/b8c837_8b8bfe37f67a47b7a3d0c39fc633f479.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/active_and_passive_voice_teaching_ai.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76102764406.pdf
    • https://cdn.shopify.com/s/files/1/0465/3308/3294/files/56190504551.pdf
    • https://cdn.shopify.com/s/files/1/0429/4888/6684/files/32516239000.pdf
    • https://cdn.shopify.com/s/files/1/0430/6622/8898/files/c._g_comedy.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8764/files/scrabble_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/26196714384.pdf
    • https://cdn.shopify.com/s/files/1/0438/2477/5330/files/76622579859.pdf
    • https://static.usrfiles.com/ugd/74c34a_2059fa3d2c5d4e5d962f501cfef048d7.pdf
    • https://static.usrfiles.com/ugd/b8c837_73bd2cffd2074b3da95b4760d81bd000.pdf
    • https://static.usrfiles.com/ugd/4b68be_dfd2e50e07ab452884bf90c69092c691.pdf
    • https://static.usrfiles.com/ugd/a48928_f2293b1d2f50475996cd50efb5da5a55.pdf
    • https://static.usrfiles.com/ugd/b8c837_d8ce5acb8d0747bc9a93e04fd301b2ea.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_off0000551a.bin
82e9f4bf76f1f67e98a72e5e5a0de4573d401a7e827d26ea1f223ed82e052143		 pdf-font-stream PDF embedded font (sfnt) at offset 0x551A 5344 bytes
font_01_sfnt_off00006737.bin
f4980de3975abf7702f716013b8badbb6578bb493d20ced6d1f1694a607bec81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6737 10320 bytes

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