Malicious PDF — malware analysis report

Static analysis result for SHA-256 217b97366d4c5c1c…

MALICIOUS

PDF

43.2 KB Created: 2020-08-30 01:09:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f6332a9893dfe17e350d5b9d6542d07 SHA-1: e8c91b6c819932b1ecbebbe8c62b05f0bb493fde SHA-256: 217b97366d4c5c1c768fd878d9cd59e99e4ceb53a31b6a45f8e1cb9649a0dbdf
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and appears to be part of a link farm strategy. The primary malicious URL is ttraff.cc, which is used to redirect users. The file's structure and the presence of numerous links suggest a tactic to manipulate search engine results or to distribute malicious content through a network of seemingly benign PDFs.

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.cc/wix?keyword=richard+dotts+quotes
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/71939579626.pdf
    • https://cdn.shopify.com/s/files/1/0432/8862/5316/files/scratch_for_chromebook.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/pilijovizer.pdf
    • https://cdn.shopify.com/s/files/1/0430/7743/5556/files/jizebuvapofurubomopi.pdf
    • https://static.usrfiles.com/ugd/b8c837_766294f9829343e69533363d1e0b2827.pdf
    • https://cdn.shopify.com/s/files/1/0440/5844/3941/files/pasegopafifonezejeposon.pdf
    • https://cdn.shopify.com/s/files/1/0429/3709/0211/files/pokokov.pdf
    • https://cdn.shopify.com/s/files/1/0437/6897/1415/files/psp_go_emulator_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32823332632.pdf
    • https://cdn.shopify.com/s/files/1/0431/0201/1548/files/nezidedewenik.pdf
    • https://cdn.shopify.com/s/files/1/0431/9769/4109/files/poweredge_t30_user_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006052.bin
03b3f5051daed8ec1b3cc41f3b46276886d5ab449ddc973ba42db539b93f9428		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6052 4904 bytes
font_01_sfnt_off00007108.bin
9273d839e3603ae9845f7216647b8872666c151e9091ae320d9004a039fe2ec2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7108 9816 bytes
font_02_sfnt_off00009265.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9265 4324 bytes

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