Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddd282d8df7ae627…

MALICIOUS

PDF

53.8 KB Created: 2020-07-28 18:15:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f5669158199cf9a8cdb35f0fef55dc9 SHA-1: 258cabe369077c755d6836d348a3aecf0299a5f9 SHA-256: ddd282d8df7ae627b76b23dda81e7ace8eca597f43473248fb2f78e01ac20402
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of these links, 'https://ttraff.com/pify?keyword=barb+wire+movie++in+tamil', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDF documents from web content, which aligns with the link farm behavior.

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=barb+wire+movie++in+tamil
    • http://files.virtualbudo.com/uploads/1/3/1/0/131069886/7042179.pdf
    • http://files.lightthewaytraining.com/uploads/1/3/1/4/131453399/nibejuvabed.pdf
    • http://files.savvyhouz.co.nz/uploads/1/3/1/8/131856317/7948748.pdf
    • http://files.mycpajason.com/uploads/1/3/0/8/130814510/kakigupimadaj.pdf
    • http://files.globalisationandcities.com/uploads/1/3/1/6/131607174/jilaxafufusekiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82973104521.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gozoba.pdf
    • https://cdn.shopify.com/s/files/1/0432/8275/9836/files/sobipebalililumupo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lufixupiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/1889/5010/files/96825060801.pdf
    • https://cdn.shopify.com/s/files/1/0438/3929/1554/files/tubimuporovijovosenelak.pdf
    • https://cdn.shopify.com/s/files/1/0440/1355/1781/files/79784289311.pdf
    • https://cdn.shopify.com/s/files/1/0432/2502/2621/files/kujatifataxoxanazogudunap.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/91893701803.pdf
    • https://cdn.shopify.com/s/files/1/0434/3670/3900/files/fewanugezi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2340/9057/files/pijuwofinunitew.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_off00009546.bin
f60bbbcdf23ff94b07ed587ebd27acb4f5174237b03df3ab6892cab46f1e4055		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9546 4780 bytes
font_01_sfnt_off0000a57a.bin
f4636a2e8b49a1e8b7c9ea2d5c078e3f10a1a6d0de8932e6691115c77e36aafa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA57A 10692 bytes

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