Malicious PDF — malware analysis report

Static analysis result for SHA-256 91e17909ce94c755…

MALICIOUS

PDF

34.8 KB Created: 2020-06-12 02:02:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43eaa6b56c829696437d3f3819778dcf SHA-1: 198813177406c5f47e78fbb57c570737cedcaed9 SHA-256: 91e17909ce94c7555d5e6edcab39daacc2bf0de9c1227b8dac9742d6c3f6b886
62 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs pointing to external PDF documents hosted on various domains. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a deliberate attempt to create a link farm or redirect users to malicious content. The document body, while containing technical terms, also includes several of these suspicious URLs, reinforcing the attack pattern. No scripts were extracted from this sample, limiting the ability to determine further payload delivery or execution.

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://blueprintgenealogicalassocllc.net/uploads/1/3/0/4/130436139/130436139.html#pensky+marten+flash+point+apparatus+manual
    • http://infinityenterprisesmedia.com/uploads/1/3/0/2/130289313/fuwesutisigomox.pdf
    • http://jewelsoffes.com/uploads/1/3/1/6/131606762/fefajezedogoke.pdf
    • http://intentionaluxr.com/uploads/1/3/1/4/131438071/4379707.pdf
    • http://frukosthem.com/uploads/1/3/0/6/130639643/a7231ac5eb464c.pdf
    • http://cobbandcobuilding.com/uploads/1/3/0/6/130620838/bositaji.pdf
    • http://laurenshaw.org/uploads/1/3/0/5/130540046/6511225.pdf
    • https://nubafegurobu.files.wordpress.com/2020/06/83197966830.pdf
    • https://xidedikef.files.wordpress.com/2020/06/98121293609.pdf
    • https://xuzorun.files.wordpress.com/2020/06/79186106157.pdf
    • https://zadidepetox.files.wordpress.com/2020/06/jadomopalozefoji.pdf
    • https://wedexetu.files.wordpress.com/2020/06/lafemol.pdf
    • https://waxirowom.files.wordpress.com/2020/06/wadakapipagemitof.pdf
    • https://likoruki.files.wordpress.com/2020/06/zalelapewenixevolako.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bc5.bin
72589afc6d83d8520120c21c32cdaaa2d76aad11c28457c99dec2ff4db905e0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC5 10548 bytes

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