Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec4f4eae8c5c34cf…

MALICIOUS

PDF

43.3 KB Created: 2020-08-11 13:00:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f34d7b7f7397b1b934fb219206a5fc1 SHA-1: 5160848693bc1251ea9a1558fe7f42614b6896b2 SHA-256: ec4f4eae8c5c34cf28bc29213b8fa4c68574ed8820e3a8b07a04a3e94b9157f3
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, specifically pointing to 'https://ttraff.ru/pify?keyword=certificate+of+achievement+pdf+template'. The document body, though heavily obfuscated, also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The primary intent appears to be redirecting the user to malicious infrastructure under the guise of a document template.

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=certificate+of+achievement+pdf+template
    • http://zapoz.societyofprofessionalobituarywriters.org/uploads/1/3/1/3/131383544/joburimiwuk-gizujesifek.pdf
    • http://files.sensualtigerholisticarts.com/uploads/1/3/1/3/131380054/gexeg.pdf
    • http://files.creativeawarenesscounseling.com/uploads/1/3/1/4/131453133/deralukalaserubuxem.pdf
    • http://files.ask-noodles.com/uploads/1/3/1/3/131398573/jikibapuseso.pdf
    • https://cdn.shopify.com/s/files/1/0436/3314/8062/files/matteo_carcassi_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3447/files/96_buick_lasaber.pdf
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/pogurejusewomij.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/wikusijebevu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/69023206080.pdf
    • https://cdn.shopify.com/s/files/1/0432/3019/9966/files/11662767565.pdf
    • https://cdn.shopify.com/s/files/1/0436/4982/6969/files/depavonimuvuvem.pdf
    • https://cdn.shopify.com/s/files/1/0432/7754/9726/files/kanulobesugutefexav.pdf
    • https://cdn.shopify.com/s/files/1/0434/5570/9341/files/4989093221.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/70683779.pdf
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/1105110568.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/neretidesalefadim.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_off00006d76.bin
d36e4c08aab22e22a85794488268df4b810cd482e037d4b674e653875d6cb2d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D76 5180 bytes
font_01_sfnt_off00007eee.bin
60e6da6e99a251594d4c609a46980460f523fe81338072e8572ed761396e3d4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EEE 9848 bytes

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