Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd159dc306b274e0…

MALICIOUS

PDF

38.5 KB Created: 2020-08-31 11:02:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 046577b2c114819f26603acc0cf89f5d SHA-1: 6ac4d6881e43f4eab3e0da82ba8dd3de5de89456 SHA-256: fd159dc306b274e058bbb6c69c87e0d0de9e679a1d62e7bd4b27c9d0b6743cdf
128 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.ru/wix?keyword=get+the+guy+matthew+hussey+pdf+free+download'. This URL is likely part of a lure to trick users into downloading further malicious content. The document body, though heavily obfuscated, contains similar URLs and text suggesting a download scam. The presence of a 'download button' heuristic further supports this attack pattern.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=get+the+guy+matthew+hussey+pdf+free+download
    • https://static.usrfiles.com/ugd/3bf302_8a0a4ef3f09248959847d3a3920281ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_a55c3657c1c346ceb08a8fe36e0100b7.pdf
    • https://static.usrfiles.com/ugd/a6e5e9_1a1bb51033c547ac8aef5c508a858f94.pdf
    • https://static.usrfiles.com/ugd/b8c837_81432d7ddcb1452f9123bbef2aaf12b7.pdf
    • https://static.usrfiles.com/ugd/2486b5_49b6eac835ad40548f4fd8782b490474.pdf
    • https://static.usrfiles.com/ugd/493135_07496c845f014770a162837579e97470.pdf
    • https://static.usrfiles.com/ugd/b8c837_9fc0f95631f744759b2ac730f477f9fc.pdf
    • https://cdn.shopify.com/s/files/1/0428/6906/3836/files/77457668214.pdf
    • https://cdn.shopify.com/s/files/1/0438/1150/4288/files/21223209543.pdf
    • https://cdn.shopify.com/s/files/1/0463/3005/2769/files/73686336392.pdf
    • https://cdn.shopify.com/s/files/1/0439/1400/2600/files/jenonezefilodomide.pdf
    • https://cdn.shopify.com/s/files/1/0431/1053/1238/files/assertive_communication_formula.pdf
    • https://static.usrfiles.com/ugd/d43733_a67c3bdec32644b4a56d1182d4522d63.pdf
    • https://static.usrfiles.com/ugd/8de238_564c3e2aa29341d2a1fe6e30b3f3a24a.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_off00005790.bin
e23d69395d63ef8fa721fdca50a59c9e0f8d3f8d15c60526e007735f28d24e8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5790 5680 bytes
font_01_sfnt_off00006adc.bin
7203b4f76082812ef0137f5dd5fd03b520a40f4107b9d3d90ead4780b69a2da6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADC 9936 bytes

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