Malicious PDF — malware analysis report

Static analysis result for SHA-256 95dfd9bc385e971a…

MALICIOUS

PDF

33.7 KB Created: 2020-08-29 11:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b3e71f6aa88381e4d88e52ea66c2f25 SHA-1: 93352ba16eadce93b132d0869c46395958197827 SHA-256: 95dfd9bc385e971accd157297faf273fe837797f3eea2f1536e6440fc24c0930
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains text suggesting it is a lure for educational material, specifically 'carson dellosa reading comprehension grade 3 pdf'. The primary malicious URL identified is ttraff.ru, which likely serves as a gateway to further malicious content.

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.ru/wix?keyword=carson+dellosa+reading+comprehension+grade+3+pdf
    • https://cdn.shopify.com/s/files/1/0432/3888/3485/files/82651045436.pdf
    • https://cdn.shopify.com/s/files/1/0438/1717/3149/files/nowor.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3964/files/24548256969.pdf
    • https://cdn.shopify.com/s/files/1/0439/6033/6542/files/61052526547.pdf
    • https://cdn.shopify.com/s/files/1/0447/8281/3341/files/astm_material_standards.pdf
    • https://cdn.shopify.com/s/files/1/0436/2538/2051/files/blkoviny_chemie.pdf
    • https://static.usrfiles.com/ugd/b8c837_e63ed30d3bb74fc4b721a7fc51224914.pdf
    • https://static.usrfiles.com/ugd/b8c837_e35fb9174f764b579e129f622a8f2444.pdf
    • https://static.usrfiles.com/ugd/b8c837_2101215dc9d548fe91031965ea2f9089.pdf
    • https://static.usrfiles.com/ugd/b8c837_522641019a894c168b977696308f1137.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a6276d66f8341b9a030b75f3b7c5ef1.pdf
    • https://static.usrfiles.com/ugd/b8c837_2e5f2ae6fe21450eb02d597a6e29cb83.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_off000045ad.bin
d0e15e23f43ddd5befe6dc77afbfa515b1756c4dc388b0827ec2e3456db0bfd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45AD 5636 bytes
font_01_sfnt_off000058ad.bin
a77241156e29a7172f8e335620e4eefc03ecb9976998b79627d651195651de1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58AD 9776 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.