Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c71ea0d6d9fefc9…

MALICIOUS

PDF

48.5 KB Created: 2020-07-30 07:46:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75ca3c0ba1348fa199139566d400bcc8 SHA-1: 1a2608e80331efa66fb757a4bf8f2c5b344c6fce SHA-256: 3c71ea0d6d9fefc92f9267799bd77a933ffc6bdc9bc05fcb27cbd0219470067e
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.com'. Additionally, it exhibits a PDF link farm, suggesting an attempt to artificially inflate search engine rankings or distribute content through numerous links. The document body is heavily obfuscated and appears to be junk data, but the presence of the redirector URL is the primary indicator of malicious intent.

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=boerhavia+diffusa+medicinal+uses+pdf
    • http://files.rmbscenic.com/uploads/1/3/1/1/131163841/guwobo.pdf
    • http://files.eugeneatwoodfund.org/uploads/1/3/1/6/131637679/dewegiv-wizarozife-dukuwibupelari.pdf
    • http://files.estevanwritersgroup.ca/uploads/1/3/1/0/131070336/3511980.pdf
    • http://files.abundantgracesparta.org/uploads/1/3/0/7/130739742/purer.pdf
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/65117512412.pdf
    • https://cdn.shopify.com/s/files/1/0431/9258/2293/files/benipuposanixemikivu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/12987804054.pdf
    • https://cdn.shopify.com/s/files/1/0429/0225/7823/files/zaluripotuvigo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/sonaw.pdf
    • https://cdn.shopify.com/s/files/1/0427/8393/2582/files/6898379353.pdf
    • https://cdn.shopify.com/s/files/1/0440/4586/1014/files/64628163694.pdf
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/23756336867.pdf
    • https://cdn.shopify.com/s/files/1/0432/4917/2643/files/71643063732.pdf
    • https://cdn.shopify.com/s/files/1/0437/3217/2965/files/79547555352.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12319118289.pdf
    • https://cdn.shopify.com/s/files/1/0437/4183/9511/files/gepida.pdf
    • https://cdn.shopify.com/s/files/1/0437/3456/5025/files/71573032440.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/
    • https://cdn.shopify.com/s/files/1/0429/0225/7823/fi

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000080c5.bin
ea46bc224970ced10fbb895e05c230b26d53a57d0a107c521d1fcf86e18a599e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80C5 5304 bytes
font_01_sfnt_off000092ad.bin
c50ebe7b509ebcd29c375cf1e839a16f24fef9dad8966792bcacffe948dc2822		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92AD 10100 bytes

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