Malicious PDF — malware analysis report

Static analysis result for SHA-256 2808e19b3c664ad5…

MALICIOUS

PDF

36.3 KB Created: 2020-08-08 19:19:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b03910e7bfd9831eaf744e4d6b09154 SHA-1: 7e34700847962a9162574bfa0be125e26514a4be SHA-256: 2808e19b3c664ad53f5d6b3111e0222f211e636d849fb99972395dea632e922e
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=brodski+motori+pdf, which is likely intended to redirect the user to a malicious site. The presence of numerous links to Shopify-hosted PDFs suggests an attempt to appear legitimate or to leverage a trusted domain for hosting 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.cc/pify?keyword=brodski+motori+pdf
    • http://files.littlegemskaren.co.uk/uploads/1/3/0/9/130969983/27af53.pdf
    • http://files.potomacmodelun.com/uploads/1/3/1/6/131636969/6076434.pdf
    • http://files.area51scooterclub.com/uploads/1/3/2/6/132695351/7712548.pdf
    • http://files.chitantraflow.com/uploads/1/3/1/1/131164081/9a2978b708d0c2e.pdf
    • http://files.rockymountainwands.com/uploads/1/3/2/6/132682124/6390931.pdf
    • https://cdn.shopify.com/s/files/1/0432/8692/1376/files/kafumin.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3592/files/jeremogefulemorukaxotuti.pdf
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/97991024223.pdf
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/94939861409.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5682/files/lugudibanukugupavekibafi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2694/7989/files/283526322.pdf
    • https://cdn.shopify.com/s/files/1/0439/1770/5371/files/tales_of_arabian_nights_burlington_books.pdf
    • https://cdn.shopify.com/s/files/1/0430/8975/6311/files/93338688230.pdf
    • https://cdn.shopify.com/s/files/1/0436/9462/0837/files/pusetagel.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/minecraft_nether_hub.pdf
    • https://cdn.shopify.com/s/files/1/0433/0491/1006/files/jafuru.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_off0000521b.bin
f8a1d9c2457a7daa6a51fd697e84b53287b0a2265323d49928b5b9d915f98bbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x521B 5056 bytes
font_01_sfnt_off0000633f.bin
5951d6a717efb048053e11595a3890fe3ccb799da630570dc13ffd8b9e9eddb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x633F 9968 bytes

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