Malicious PDF — malware analysis report

Static analysis result for SHA-256 aae455f7e5d837c1…

MALICIOUS

PDF

53.4 KB Created: 2020-08-20 19:18:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 647ae22d1f5b87aa1403f7d72b9c4ac0 SHA-1: 33093f89be17f5f2dc3dae7981eeb288958452a9 SHA-256: aae455f7e5d837c1bd1e7675a6bd5a53935ef06eea17cf6d2d54899afdaaf562
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=bulletstorm+trophy+guide+roadmap'. This URL is embedded within the document body, disguised as a trophy guide, suggesting a social engineering lure. The file also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The primary malicious IOC is the ttraff.com redirector, which likely serves as a gateway to further malicious activities.

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=bulletstorm+trophy+guide+roadmap
    • http://files.leabellablogs.com/uploads/1/3/1/4/131409794/554116.pdf
    • http://varabip.maxwellsbattery.org/uploads/1/3/1/4/131407315/cbabc3f2c5c9.pdf
    • http://vobanad.pwr-ga.com/uploads/1/3/0/7/130775085/5bbba1f9dfd8698.pdf
    • http://bibir.cassandramlambros.net/uploads/1/3/1/4/131407406/4510211.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/bodyweight_crossfit_workouts.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kujefitil.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/7578542843.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/nebuzoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1832/files/60582799402.pdf
    • https://cdn.shopify.com/s/files/1/0430/9463/8749/files/40457054753.pdf
    • https://cdn.shopify.com/s/files/1/0432/6876/7907/files/canaliform_dystrophy_nails.pdf
    • https://cdn.shopify.com/s/files/1/0432/2036/9567/files/99387407989.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8890/files/tonewijuxalulabejelu.pdf
    • https://cdn.shopify.com/s/files/1/0439/1626/3592/files/30950728950.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_off000092ec.bin
f049da5e3518dd1d57dab7386901354a2188374b34c412d058c93a1d4ce77601		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92EC 5524 bytes
font_01_sfnt_off0000a597.bin
fb09cd29f585fe74a8a752103181497d87507baf4a8b60999fd243d0eef6f6c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA597 10360 bytes

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