Malicious PDF — malware analysis report

Static analysis result for SHA-256 37baf2af057aa40b…

MALICIOUS

PDF

51.6 KB Created: 2020-07-27 10:51:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5660aec8b57f3979f7f0638bbeadc01 SHA-1: a3248ad7472d70c9fcbbd72aee5ba1bd8069a1f4 SHA-256: 37baf2af057aa40b96ad25302d68c2a8d14bb800dd6ac24c48bd1c66f673580d
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Another critical heuristic indicates a PDF link farm hosted on Shopify, with 30 external PDF links. The ML classifier also strongly flagged this PDF as malicious. The document body contains garbled text but includes a reference to 'Blade runner 2049 trailer', suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=blade+runner+2049+trailer
    • http://files.teamnewbalancegvl.com/uploads/1/3/0/7/130775462/7158037.pdf
    • http://files.risehairinc.com/uploads/1/3/1/6/131637546/7290640.pdf
    • http://files.christopherhale.net/uploads/1/3/2/3/132302764/kalixe.pdf
    • http://files.stanthonysparkfalls.com/uploads/1/3/1/4/131455832/8636701.pdf
    • http://files.hinksoncompany.com/uploads/1/3/1/3/131379054/rodurekufixugubegep.pdf
    • https://cdn.shopify.c
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/93840192799.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/bagoferuvoteki.pdf
    • https://cdn.shopify.com/s/files/1/0429/1674/1286/files/patigatevatu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6090/1528/files/17450327017.pdf
    • https://cdn.shopify.com/s/files/1/0431/3730/2690/files/17382283745.pdf
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/kizikokinutefopexolizep.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/98082237470.pdf
    • https://cdn.shopify.com/s/files/1/0439/1727/9400/files/juvilaxob.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/didemimebaropimudalizu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8986/3580/files/70185402651.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_off00008a79.bin
110865d4c99bf50aeff92f9c202205772b75e7183d2d09238be1f8e87b5b7977		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A79 4980 bytes
font_01_sfnt_off00009b6b.bin
7cb42dc95a9ea4d16065ef7c430e758f1db0eabd3efdb1c0cb4d7a41a4b353e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B6B 11244 bytes

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