Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd0926b1420c675b…

MALICIOUS

PDF

40.9 KB Created: 2020-08-29 08:39:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 906c3bf0422718d6d120d09e323da0ad SHA-1: 667f5ed7ec8ba3e8969a000e937910d0a57648b0 SHA-256: bd0926b1420c675b455f64ea243f05d5d8e6022010adfec231e2223efc823c26
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=interior+design+illustrated+francis+ching'. It also exhibits characteristics of a PDF link farm, with numerous external links, many of which point to Shopify domains. The document body, though heavily corrupted, contains the same malicious URL and references to design-related content, suggesting a lure. The primary attack vector appears to be social engineering via a deceptive link within the PDF.

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=interior+design+illustrated+francis+ching
    • https://static.usrfiles.com/ugd/b8c837_fcbed99362e3420ea838c0c4bbed583e.pdf
    • https://static.usrfiles.com/ugd/b8c837_65373540caa0459fa6610c8336131adb.pdf
    • https://static.usrfiles.com/ugd/b8c837_9fc3d36a46744733bb5f2869e2f83ce2.pdf
    • https://static.usrfiles.com/ugd/b8c837_25d91c7bdb5b46f9a90f6ebb338b124c.pdf
    • https://static.usrfiles.com/ugd/b8c837_d3081abcf207469e91cb6031945b2bdb.pdf
    • https://static.usrfiles.com/ugd/b8c837_70fa9ad2f64145bc96ffa54f0b6d7146.pdf
    • https://cdn.shopify.com/s/files/1/0439/8442/1022/files/wedding_card_template_illustrator_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/5076/0357/files/51931099334.pdf
    • https://cdn.shopify.com/s/files/1/0428/9645/7884/files/herobrine_skin_template_for_pe.pdf
    • https://cdn.shopify.com/s/files/1/0460/2999/6191/files/tuvexatukajojov.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8170/files/zaton.pdf
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/ignou_ma_assignment_2020_19_solved.pdf
    • https://cdn.shopify.com/s/files/1/0437/3626/8949/files/total_body_workout_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/3434/5625/files/analytical_chemistry_by_gary_christian_6th_edition.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_off00006338.bin
8864ad5b63c1962f5d799f19324804a5cb2a6f930fe8b76a6eeedc5222ae29c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6338 5220 bytes
font_01_sfnt_off000074e8.bin
54c3a778ad7b13d87c5a070ebe099c371018f5ba6ce0a8111fec3f059eba7fbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E8 9904 bytes

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