Malicious PDF — malware analysis report

Static analysis result for SHA-256 b749f3f91e692c0f…

MALICIOUS

PDF

46.6 KB Created: 2020-08-06 03:52:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f0b6d79f8d25cf4a28af2b4c30f6e48 SHA-1: ec80900b420849fba35ca6323962703c458d1f14 SHA-256: b749f3f91e692c0fbf339d099f7497b0eab2555cc72026462b5e8724c0251516
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm heuristic, with numerous links pointing to Shopify-hosted PDFs. The embedded URL in the document body also leads to the 'ttraff.ru' domain. These indicators suggest the primary purpose is to redirect users to potentially malicious 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.ru/pify?keyword=canon+in+d+piano+easy+pdf
    • http://files.deanacio.us/uploads/1/3/2/6/132695832/8052355.pdf
    • http://files.shoulderandhandclinicisleofwight.com/uploads/1/3/1/3/131384024/8741995.pdf
    • http://files.theexoticanimalencounter.co.uk/uploads/1/3/0/7/130775759/9875250.pdf
    • https://cdn.shopify.com/s/files/1/0433/4541/2261/files/wegokafamuzunogajaxot.pdf
    • https://cdn.shopify.com/s/files/1/0429/2280/3366/files/lukabesu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/vutikude.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/95509007145.pdf
    • https://cdn.shopify.com/s/files/1/0437/2067/1386/files/37675718045.pdf
    • https://cdn.shopify.com/s/files/1/0439/3913/5643/files/6246210310.pdf
    • https://cdn.shopify.com/s/files/1/0431/3523/8301/files/27165007849.pdf
    • https://cdn.shopify.com/s/files/1/0430/9850/5377/files/lalikilazafujaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/5639/0551/files/59417712916.pdf
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/lakimatefekifutatavurej.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/53572842467.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_off00007856.bin
7d21664b3f0e66ca8ca0b1a486d97c24aa371fed033371d010b9785243d3f376		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7856 4912 bytes
font_01_sfnt_off0000892d.bin
66ce4bb56bc48cbfdd979f20c7a2b86ad0c772f969c21524a3682a5853d60d7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x892D 10724 bytes

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