Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfe003c71f467bc9…

MALICIOUS

PDF

37.3 KB Created: 2020-03-31 19:52:15 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9d07cb9e5e1f7b959e55601dc9a52246 SHA-1: 29a656a15b26b901c0c0e5b39a35f8322b77589d SHA-256: bfe003c71f467bc9cdfbac01f35b6eb290d1dd24a38cf21c1bb8ec70b013e054
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a large number of external links to various domains, a technique often used for SEO poisoning or to redirect users to malicious content. The ML classifier strongly indicated maliciousness. The document body, though partially corrupted, contains text related to 'The marriage bargain pdf free download' and numerous URLs, reinforcing the lure and redirection pattern. The primary attack pattern involves leveraging a link farm to distribute malicious content or redirect users to phishing sites.

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://morsebrass1.com/uploads/1/3/0/3/130324440/130324440.html#the+marriage+bargain+pdf+free+download
    • http://christiancardsandphotos.org/uploads/1/3/0/6/130620737/gatozamuton-nezakurarilitu-jidugobelixa-kopatesa.pdf
    • http://atyourwittsend.net/uploads/1/3/0/6/130603704/6081858.pdf
    • http://margaretgriffithjewellery.com/uploads/1/3/0/6/130605175/6376097.pdf
    • http://wowsocial.net/uploads/1/3/1/0/131069899/fozilubedifapunul.pdf
    • http://knittingcarnival.com/uploads/1/3/0/9/130969082/rixoparuzilil-pimotelowufoxew.pdf
    • http://foundationslearningacademy.org/uploads/1/3/0/5/130551386/2c00c6.pdf
    • http://charlesjrobinson.com/uploads/1/3/0/6/130604031/pojedu-telogesusafa-momosuneluxovuz-guwajavif.pdf
    • http://kangedefa.com/uploads/1/3/0/6/130620755/8686270.pdf
    • http://shapeavenue.com/uploads/1/3/0/4/130483114/4479b13445.pdf
    • http://bayrefugeeproject.org/uploads/1/3/0/5/130540604/9173722.pdf
    • http://made-in-water.com/uploads/1/3/1/3/131384281/230556.pdf
    • http://advantixiifordogs.com/uploads/1/3/0/7/130775084/86190d605b98b6.pdf
    • http://willowcreekducks.com/uploads/1/3/1/4/131408343/4586611.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_off00006900.bin
e779884df19d64e31f0217789a274e6e94ffda665f8a444f6ba721b526eac5a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6900 8032 bytes

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