Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b573f92e75c19a5…

MALICIOUS

PDF

45.7 KB Created: 2020-08-12 14:46:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70cad6435533e1fc032a7e7f0cb0a3cb SHA-1: c9a49d75d819f2514074d832ef9c189f796c5335 SHA-256: 8b573f92e75c19a5914350bf3d620a9c77b7a697d5d5188215cefb9677342025
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=delegation+of+financial+power+bangladesh+pdf'. This URL is likely part of a phishing or scam campaign designed to trick users into downloading further malicious content. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a link farm or content-luring tactic. The presence of multiple PDF links further supports the link farm heuristic.

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/pify?keyword=delegation+of+financial+power+bangladesh+pdf
    • http://files.simplymidwifery.com/uploads/1/3/0/7/130776462/2653109.pdf
    • http://files.studiowestmaus.com/uploads/1/3/1/3/131384401/lefebuka_nesaberaremaw_rafotokeruni_zerem.pdf
    • http://kaliket.boisgoetrehen.com/uploads/1/3/1/0/131070450/2278455.pdf
    • https://cdn.shopify.com/s/files/1/0427/4572/5094/files/tilasufamovavaweba.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/73115788392.pdf
    • https://cdn.shopify.com/s/files/1/0448/7512/0807/files/sapatudujina.pdf
    • https://cdn.shopify.com/s/files/1/0428/4124/3814/files/children_s_books_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6982/files/rexilugiluvirafek.pdf
    • https://cdn.shopify.com/s/files/1/0431/5014/7745/files/runazebobututebopone.pdf
    • https://cdn.shopify.com/s/files/1/0433/9056/6556/files/benigna_hiperplazija_prostate.pdf
    • https://cdn.shopify.com/s/files/1/0431/3071/6326/files/riwepilatimel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jonexosorovofevovu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/2172821282.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/55641770269.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_off000073df.bin
61eee74c94a9a88e315701a756ca3c868f5a51b459ffe2339ad1caddeec6e6b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73DF 5648 bytes
font_01_sfnt_off0000871e.bin
4a1bef92faf1e9486608236c7fa39b52e9eef3f92c56c12823bceff41940224f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x871E 10268 bytes

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