Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c5829b93becc576…

MALICIOUS

PDF

49.4 KB Created: 2020-08-30 22:43:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89cd81d01b69432242ec40733ea52c18 SHA-1: 5ebe670832f18b0257ee80fa7d30d7e810ff8850 SHA-256: 2c5829b93becc576f161a8ffc473ef9459801797d42470bb7b2223c131d2060e
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wix?keyword=rangers+apprentice+book+10'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many of which host benign content. The document body, though heavily obfuscated, contains the same malicious URL and references to book titles, suggesting a lure to a malicious site disguised as a resource for reading material.

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=rangers+apprentice+book+10
    • https://cdn.shopify.com/s/files/1/0431/5293/3021/files/37071353351.pdf
    • https://cdn.shopify.com/s/files/1/0430/5816/7959/files/jekixowumumawebimutumise.pdf
    • https://cdn.shopify.com/s/files/1/0432/1945/2063/files/s6_manual_transmission.pdf
    • https://cdn.shopify.com/s/files/1/0438/1986/0125/files/7909620162.pdf
    • https://cdn.shopify.com/s/files/1/0431/5322/7936/files/56595870663.pdf
    • https://cdn.shopify.com/s/files/1/0429/6985/8214/files/ajay_yadav_anesthesia_download.pdf
    • https://static.usrfiles.com/ugd/1849a1_34dd735351ab4f339653614f69269c8f.pdf
    • https://static.usrfiles.com/ugd/b8c837_57ede5627bd64971b4976289694babe6.pdf
    • https://static.usrfiles.com/ugd/21e6f2_73c9e198c5af42c0914fe95c3210819a.pdf
    • https://static.usrfiles.com/ugd/b8c837_1276160a6c1640e9867112061de85892.pdf
    • https://cdn.shopify.com/s/files/1/0434/5787/2033/files/psa_nitrogen_gas_generator.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/cashflow_game_rules.pdf
    • https://cdn.shopify.com/s/files/1/0437/2607/8101/files/jejagawo.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_off00008357.bin
53e0d8a1d1e27576f4693eb5b6633d614f5eecf307f68615be5c5a6f54324949		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8357 5476 bytes
font_01_sfnt_off00009609.bin
076c3d1bdc248486b5652ef3c562aa4da3c74785b3a96bef9c5cb0fff07cf062		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9609 10280 bytes

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