Malicious PDF — malware analysis report

Static analysis result for SHA-256 eec46d8c8075779b…

MALICIOUS

PDF

36.2 KB Created: 2020-08-31 06:52:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b3bd3c77b9f6060153afc4ea4517d48 SHA-1: 2af41a82217a0ddc5b38d3e871574ad3823d3bef SHA-256: eec46d8c8075779b882a9ae6601c3a973fbdec81925dd1b95d1978bba3e6663c
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=e2+book+pdf+free+download'. This indicates an attempt to lure the user to a malicious site under the guise of a free ebook. The document body also contains text related to 'e2 book pdf free download', reinforcing the lure. The presence of a mass external PDF link farm further supports 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.cc/wix?keyword=e2+book+pdf+free+download
    • https://static.usrfiles.com/ugd/b8c837_aafbd17cb98245e3a07b59be7b774e56.pdf
    • https://static.usrfiles.com/ugd/b8c837_97f6b10ce3454c0db85ad522e47a3c50.pdf
    • https://static.usrfiles.com/ugd/764aaa_5d08e5645d4c46f18fbcbb497dbc4a7b.pdf
    • https://static.usrfiles.com/ugd/cfbfd2_da2211828e514fcf9847d472624b4ec6.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc2cf24b7c4d45dab039fb6137843dce.pdf
    • https://cdn.shopify.com/s/files/1/0433/3889/1419/files/92510284013.pdf
    • https://cdn.shopify.com/s/files/1/0451/3474/1658/files/fischer_fire_foam_data_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/7743/4525/files/21571684757.pdf
    • https://static.usrfiles.com/ugd/09273f_4379e58e5f0946598c9f4cc23c86b8f0.pdf
    • https://static.usrfiles.com/ugd/5ed537_89059936784348b9ac6703cdad026c8e.pdf
    • https://cdn.shopify.com/s/files/1/0434/7022/5558/files/41760116355.pdf
    • https://cdn.shopify.com/s/files/1/0431/9612/1248/files/cakewalk_sonar_x3_producer_edition.pdf
    • https://cdn.shopify.com/s/files/1/0436/2177/7570/files/zigok.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_off000050af.bin
3468b0a6d86604c400bc21e81456f57f9c37f22610abe32ecb461fde44e013e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50AF 5244 bytes
font_01_sfnt_off000062a1.bin
eb910d99d9b62ba97b3d03ff3410468f25315bce20cc2f949fb73c5f92a4eb0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62A1 9868 bytes

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