Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2a52ddb5778d43…

MALICIOUS

PDF

37.8 KB Created: 2020-06-23 03:26:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b3bd4cc7d1580178b7e658e6259c4e6 SHA-1: e6783cf8351d1dbb64f86b0523c2b35a4a536a7f SHA-256: 9e2a52ddb5778d43e02952d4e6fe22dca0deef4dbe110be743f2c4dc3afdb7e0
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, a technique often used for SEO manipulation or to distribute further malicious content. The document body, though heavily obfuscated, contains references to 'Hip dysplasia exercises' and the wkhtmltopdf generator, suggesting a lure to disguise the malicious intent. The primary attack pattern involves redirecting users through a link farm to potentially malicious PDF files hosted on various domains.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://thechurchofbrisbane.com/uploads/1/3/1/4/131437978/131437978.html#hip+dysplasia+exercises
    • http://camillali.com/uploads/1/3/0/5/130540882/13dc79e6.pdf
    • http://adaassurance.net/uploads/1/3/1/4/131437173/5865409.pdf
    • http://bethmorton.com/uploads/1/3/1/4/131407263/576c5d1070.pdf
    • http://irwincreations.com/uploads/1/3/0/5/130590700/5995131.pdf
    • http://jimthorpeyoga.com/uploads/1/3/0/2/130288522/3299859.pdf
    • http://toralconsulting.com/uploads/1/3/1/8/131871571/senubol.pdf
    • http://surftripguru.com/uploads/1/3/1/8/131857390/5281320.pdf
    • http://anniecusickwood.com/uploads/1/3/0/7/130776585/fabumavufa.pdf
    • http://biobornayurveda.com/uploads/1/3/0/2/130287261/dasarodewixetalewef.pdf
    • http://destinypsychics.com/uploads/1/3/0/9/130969759/zugomokijofuvupazeg.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_off0000589f.bin
6ebacf7d69e588d99845c029f448bf8cdc76536ba11c41b94d6fb5b192a22560		 pdf-font-stream PDF embedded font (sfnt) at offset 0x589F 4692 bytes
font_01_sfnt_off0000689d.bin
2194348c45c953c392330b00a7f6a377df94b4d93bfbf86c12739396be1a604f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x689D 10176 bytes

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