Malicious PDF — malware analysis report

Static analysis result for SHA-256 a717ead8f6c69c4a…

MALICIOUS

PDF

46.5 KB Created: 2020-08-24 20:13:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 590938401dc52a6bb8aefdc46c3cf20f SHA-1: 37d6d92d0983d6d9e064a47fed57dfc0ef21deb1 SHA-256: a717ead8f6c69c4a41528fd4cb158bddc3d4a14947f0ac6a210a53e53da1d348
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=bush%2527+s+chicken+nutrition+guide'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which are hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The primary attack vector appears to be luring users to a malicious site disguised as a document.

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/pify?keyword=bush%2527+s+chicken+nutrition+guide
    • http://gepirakus.tottieaarvold.com/uploads/1/3/2/6/132683014/sopetasajoxa-seladanoge-pitekiloneda-lorudenar.pdf
    • http://files.westfieldboyssoccer.com/uploads/1/3/2/7/132740445/b01b3cde64.pdf
    • https://cdn.shopify.com/s/files/1/0445/3515/2804/files/discord_community_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0439/8258/6014/files/fotesowobe.pdf
    • https://cdn.shopify.com/s/files/1/0431/5542/3383/files/lantech_stretch_wrapper_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/5653/7505/files/54470828060.pdf
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/26651624857.pdf
    • https://cdn.shopify.com/s/files/1/0433/7994/9718/files/43812971320.pdf
    • https://cdn.shopify.com/s/files/1/0454/3725/5838/files/rikokapifivuwijan.pdf
    • https://cdn.shopify.com/s/files/1/0431/7590/3392/files/vowolimilinefowepokoxu.pdf
    • https://cdn.shopify.com/s/files/1/0460/9844/8548/files/hink_pink_examples_and_answers.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/
    • https://cdn.shopify.com/s/files/1/0431/5542/3383/files/lantech_stre

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000608f.bin
1ce865692e954a466973fd042900ee8e492b40f335fbb7183639dbcf395be394		 pdf-font-stream PDF embedded font (sfnt) at offset 0x608F 4988 bytes
font_01_sfnt_off00007174.bin
9717c572b491d895217c4e958acc8dae43b5536372e998b1a3c12f26fa080abe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7174 1940 bytes
font_02_sfnt_off00007aae.bin
992e48961ad15723151371e1b8ef71626d2d2f6c5f58cf55ceb1aebbc25f141a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAE 10488 bytes
font_03_sfnt_off00009e89.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E89 4324 bytes

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