Malicious PDF — malware analysis report

Static analysis result for SHA-256 c763608bc1388492…

MALICIOUS

PDF

39.0 KB Created: 2020-08-30 15:49:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 411b07a207e51aa10d0e33c78223d83d SHA-1: 3e2475e98cb969f700d352ae4a56ec30664fce28 SHA-256: c763608bc1388492160b7f856acf7778637b7dadef2376c01c6c3a06818296dc
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a malicious redirector link. It also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic. The primary malicious URL identified is https://ttraff.ru/wix?keyword=3+dot+tattoo+meaning, which is flagged as a known malicious redirector. The document body contains obfuscated text and URLs, further supporting the malicious intent.

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=3+dot+tattoo+meaning
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gejazopemovaro.pdf
    • https://cdn.shopify.com/s/files/1/0457/8849/6038/files/pavigisebopolik.pdf
    • https://cdn.shopify.com/s/files/1/0431/0358/4409/files/free_piano_sheet_music_for_white_christmas.pdf
    • https://cdn.shopify.com/s/files/1/0430/0134/8255/files/15826318523.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6009/files/sajar.pdf
    • https://static.usrfiles.com/ugd/a2e20a_755875115c1c40be8c50a6ae95ca5015.pdf
    • https://static.usrfiles.com/ugd/7f16bd_206adfcee5134478b00e01845f35d4d6.pdf
    • https://static.usrfiles.com/ugd/b8c837_83f0769e4102485a8a3e32a7e1e7d435.pdf
    • https://cdn.shopify.com/s/files/1/0440/4091/3061/files/rexabujojololas.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9800/files/26305977744.pdf
    • https://cdn.shopify.com/s/files/1/0439/3785/7691/files/beowulf_a_new_verse_translation_seamus_heaney.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_off00005eaa.bin
4d381558fe814d374cdcaba137a7eb841c4a9473a8e688274eced17ba13af3f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAA 4908 bytes
font_01_sfnt_off00006f4a.bin
5bb4c6116ecbf1327ae8dbfe6ca2e0611303f55847cfa139b9f8a97096c12b2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4A 9480 bytes

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