Malicious PDF — malware analysis report

Static analysis result for SHA-256 8adb2ae4e46c6891…

MALICIOUS

PDF

46.0 KB Created: 2020-08-05 16:30:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b509bd6f428aba1245d967260bf3a5b SHA-1: 60349cf66a1a3bd065af0f76600a5aac7ffebe4f SHA-256: 8adb2ae4e46c689102b92a8f2bd299152b8b23896d049bc676099e1197a55cd6
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to Shopify-hosted PDF files. The primary URL, https://ttraff.com/pify?keyword=anthropometrics+and+ergonomics+in+interior+design+pdf, suggests a potential SEO manipulation or content distribution scheme. The document body is heavily corrupted, preventing analysis of its direct 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.com/pify?keyword=anthropometrics+and+ergonomics+in+interior+design+pdf
    • http://files.twogypsiesandaprincess.com/uploads/1/3/1/6/131606201/funugeme.pdf
    • http://files.chbcf.com/uploads/1/3/1/0/131069839/pojuxoxopuz.pdf
    • http://files.cenutrifit.com/uploads/1/3/0/7/130776164/kiluruweburimubi.pdf
    • https://cdn.shopify.com/s/files/1/0428/0261/0335/files/42369289612.pdf
    • https://cdn.shopify.com/s/files/1/0427/9461/4940/files/basketball_tryout_evaluation_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/6091/2537/files/6778026500.pdf
    • https://cdn.shopify.com/s/files/1/0434/0557/4309/files/24359747094.pdf
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/vagimesi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6092/8405/files/rofewi.pdf
    • https://cdn.shopify.com/s/files/1/0440/0339/3694/files/hex_to_bin.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/95378981360.pdf
    • https://cdn.shopify.com/s/files/1/0428/4855/1068/files/45496304109.pdf
    • https://cdn.shopify.com/s/files/1/0430/6334/5301/files/leithold_calculus.pdf
    • https://cdn.shopify.com/s/files/1/0432/3606/5438/files/37563908957.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4831/files/ap_psychology_unit_4.pdf
    • https://cdn.shopify.com/s/files/1/0431/8419/3696/files/68818363828.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_off000075d1.bin
c64498df5c0d570943daf872a8034f07f11091a3452ed6f44e3537f87d52ff62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D1 5528 bytes
font_01_sfnt_off00008874.bin
5532d7f64becb6dd13ef21ac98bdca1f1ebac28a8872fd327f75c6c415f5a5e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8874 10024 bytes

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