Malicious PDF — malware analysis report

Static analysis result for SHA-256 c32179c63a556532…

MALICIOUS

PDF

38.7 KB Created: 2020-08-21 22:13:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c2b785cb434d32ccc8e537f9fde2f99 SHA-1: 0c527957611c80be7ffc5b0af901d60e2b530a5a SHA-256: c32179c63a556532265b93f035b466a2e50480f7d71e00eb5c3bfef314315f65
150 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.com', which is used in conjunction with a link farm of other PDFs hosted on Shopify. The document body, though heavily obfuscated, contains the same lure text and URLs. This indicates a likely attempt to drive traffic to malicious infrastructure under the guise of providing templates.

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.com/pify?keyword=instagram+story+templates+2018
    • http://files.chicagoshares.org/uploads/1/3/0/7/130739789/bujilufusoganin_kodexawabiga.pdf
    • https://cdn.shopify.com/s/files/1/0437/2021/2645/files/accpac_accounting_software_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0438/7235/4459/files/37121648397.pdf
    • https://cdn.shopify.com/s/files/1/0431/6387/7537/files/on_the_app_store_icon_vector.pdf
    • https://cdn.shopify.com/s/files/1/0440/4989/1478/files/mental_abacus_training.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jazaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/8517/5713/files/17058610266.pdf
    • https://cdn.shopify.com/s/files/1/0433/2398/1979/files/zend_avesta_trke.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25618010541.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_off000057c5.bin
74dee79440526971336bc76b153b30130a66cdb103575b8e74ab735dd5c76b4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57C5 5700 bytes
font_01_sfnt_off00006b18.bin
71a9aef34f5ed0d764ed5b1445780345dc8267654c38ea7b21e9f3828bafb666		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B18 10452 bytes

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