Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0700c331fd2eb4d…

MALICIOUS

PDF

35.1 KB Created: 2020-08-03 19:16:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 687ba8b03ed7dfda5650a8d223f81c55 SHA-1: a02e5ce3cebee318015620c0dad80a9acb0491a0 SHA-256: a0700c331fd2eb4dd87c778d9701acd460f5605ab7e26fb48cf43cf37178e0d7
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body also contains this URL, along with numerous other links to Shopify-hosted PDFs, suggesting a link farm for SEO poisoning or traffic generation. The primary malicious URL is the redirector, which likely leads to a further stage of the attack.

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=blessed+be+your+name+chords+pdf+key+of+g
    • http://files.asensioresearch.com/uploads/1/3/1/4/131438539/d5e3bdb.pdf
    • http://files.fibctaos.com/uploads/1/3/0/8/130813934/6962706.pdf
    • http://files.801fig.com/uploads/1/3/1/3/131384797/seniz_tisazoluwapagu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5035/3318/files/97601308890.pdf
    • https://cdn.shopify.com/s/files/1/0435/7180/6366/files/matigubodoxilinawir.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/10333602040.pdf
    • https://cdn.shopify.com/s/files/1/0434/8936/2082/files/36515963164.pdf
    • https://cdn.shopify.com/s/files/1/0430/4509/3533/files/tipurenuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/bedutizanerozasire.pdf
    • https://cdn.shopify.com/s/files/1/0436/6322/9078/files/podiwob.pdf
    • https://cdn.shopify.com/s/files/1/0431/8219/4852/files/55405661124.pdf
    • https://cdn.shopify.com/s/files/1/0429/3656/5923/files/vewakakosazabuxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2421/1354/files/diwuvebavuvavobexosasegup.pdf
    • https://cdn.shopify.com/s/files/1/0428/4448/7836/files/47053101358.pdf
    • https://cdn.shopify.com/s/files/1/0434/3313/2184/files/97309002913.pdf
    • https://cdn.shopify.com/s/files/1/0433/0491/1006/files/8176844681.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_off00004a27.bin
1dad680ace9be9dee0f77468eee43ab0db7b8880b085c12be57016d9b4917af3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A27 5924 bytes
font_01_sfnt_off00005e30.bin
2702b4727b23c115e57dab02de2e945dd919d478c6cf348c128369ed89aae2ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E30 9736 bytes

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