Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dd1a2498741018d…

MALICIOUS

PDF

31.2 KB Created: 2020-06-08 01:03:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a29b5ee899ce0c6fb95f9c6d0efb5112 SHA-1: 7a2a0e33e4186ad849c343087718f386c25eae4a SHA-256: 8dd1a2498741018dfe10d5ff42232dea5c5c057aa35a361a4163ba1009073b57
92 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, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. The document body contains text related to 'Toro blower vac parts', suggesting a lure, and the embedded links point to various PDF files on different domains. The primary attack pattern appears to be a link farm designed to direct users to potentially malicious content hosted externally.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://nofone.net/uploads/1/3/1/6/131606331/131606331.html#toro+blower+vac+parts
    • http://multitechnrj.net/uploads/1/3/0/5/130588872/dujimakotefenu.pdf
    • http://contemplativecommunication.com/uploads/1/3/0/4/130488539/xorisizo.pdf
    • http://somewhereintimeteasociety.com/uploads/1/3/1/6/131606674/eb1c7079b.pdf
    • http://hostmaster.bryngwynict.co.uk/uploads/1/3/0/7/130775922/munexasu.pdf
    • http://u0a6a.bpmtc.com/uploads/1/3/0/9/130969129/ce7c73c60190.pdf
    • http://capitalconsociates.com/uploads/1/3/1/6/131636890/661792ce1169cf.pdf
    • http://webmail.lovecreating4kids.com/uploads/1/3/2/3/132302870/6329353.pdf
    • https://kosezupawi.files.wordpress.com/2020/06/37933603806.pdf
    • https://rifuxovakefo.files.wordpress.com/2020/06/4691620522.pdf
    • https://zibebuti.files.wordpress.com/2020/06/xevokukisemorofap.pdf
    • https://jevogoxojad.files.wordpress.com/2020/06/11510355699.pdf
    • https://dakisil.files.wordpress.com/2020/06/diwafijaluder.pdf
    • https://xarinigeted.files.wordpress.com/2020/06/7691888375.pdf
    • https://defunudedi.files.wordpress.com/2020/06/tigeraladuroxak.pdf
    • https://jidasebop.files.wordpress.com/2020/06/fafor.pdf
    • https://besesogiwa.files.wordpress.com/2020/06/42165591791.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_off00004e01.bin
e2037b8c0aa450c76a76795581c57b8dcf4bb625b7170f24a194e6da7b0c4e63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E01 10348 bytes

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