Malicious PDF — malware analysis report

Static analysis result for SHA-256 82c16984e3a05014…

MALICIOUS

PDF

40.6 KB Created: 2020-08-18 21:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4437c41f17c81ed5aff59d3adb2f83a1 SHA-1: fc2b7f5eb22f85a4b65949600b97413646806169 SHA-256: 82c16984e3a05014dc3630606067e9a6567eaefb25794407280d92a7ee1a42cb
128 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains a reference to the malicious URL and a call-to-action phrase, suggesting a lure to download or navigate to malicious content.

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.com/pify?keyword=3+phase+distribution+board+legend+template
    • http://files.carpenterpta.net/uploads/1/3/1/4/131483265/94b0890.pdf
    • https://cdn.shopify.com/s/files/1/0432/7853/2758/files/vovalepaxevetovitagasala.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/internet_speed_meter_apk_old_version.pdf
    • https://cdn.shopify.com/s/files/1/0432/0323/1908/files/90810552503.pdf
    • https://cdn.shopify.com/s/files/1/0444/5736/1575/files/neoclassicism_and_romanticism.pdf
    • https://cdn.shopify.com/s/files/1/0448/0991/2480/files/feed_formulation_for_broiler_starter.pdf
    • https://cdn.shopify.com/s/files/1/0430/8104/0033/files/83368073053.pdf
    • https://cdn.shopify.com/s/files/1/0437/8116/1121/files/praise_god_from_whom_all_blessings_flow_piano.pdf
    • https://cdn.shopify.com/s/files/1/0439/8222/5566/files/10813049459.pdf
    • https://cdn.shopify.com/s/files/1/0439/1239/6968/files/nigoduvibimikotozun.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5025/files/dufilimogu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0801/6027/files/73937399206.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55742160690.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_off00005f48.bin
c061d592450fbcf4114c3371989441e7ba0c80f0a650a62e12df303092ad5419		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F48 5584 bytes
font_01_sfnt_off00007209.bin
f870f3e03256dbb2d5cf49275d4396634b7d4bc230b075a10cd7daea6f660a89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7209 10396 bytes

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