Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f13e4d4c67195fd…

MALICIOUS

PDF

39.9 KB Created: 2020-06-05 02:04:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf589ed111ff838b86537a555eb4dde5 SHA-1: 4c7d0e7a886577d79292e8b0b05d5289a2e11235 SHA-256: 3f13e4d4c67195fdf322dc97500d1520b1ae61f603a4f4bc5e9cc783470e0eb8
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML_NYX_PDF_MALICIOUS heuristic also flagged this PDF with high confidence. The embedded URLs suggest a link farm or SEO manipulation tactic, potentially used to distribute malicious content or engage in phishing. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://wolfecityhomecoming.com/uploads/1/3/0/6/130621516/130621516.html#trentino%2528tm%2529+deluxe+outdoor+fireplac
    • http://telliotx3.com/uploads/1/3/1/1/131164012/tewilowatunog.pdf
    • http://wellnessembodiedhealth.com/uploads/1/3/0/5/130551190/f20734ae2300892.pdf
    • http://zensfahair.com/uploads/1/3/1/4/131412955/ba2bed4.pdf
    • http://caoegato.net/uploads/1/3/1/3/131384374/nabivuxelotuxa-fuxox-zarugufopewobun.pdf
    • http://crackinghackingsoftware.net/uploads/1/3/1/0/131070786/tapodozine.pdf
    • http://getoffpaper.com/uploads/1/3/0/5/130539428/zedevub-sekajepawo-nodowusemedamix.pdf
    • http://thegreedylittlecobbler.com/uploads/1/3/1/6/131636899/panavapidovizediv.pdf
    • http://getfit4climbing.com/uploads/1/3/1/1/131163736/3e82e91.pdf
    • http://sayneightocancer.org/uploads/1/3/0/3/130323236/814536119bbecb.pdf
    • http://wolfecityhomecoming.com/uploads/1/3/0/6/130621516/terms.html
    • http://wolfecityhomecoming.com/uploads/1/3/0/6/130621516/dmca.html
    • http://wolfecityhomecoming.com/uploads/1/3/0/6/130621516/policy.html
    • https://sofotusanib324479160.files.wordpress.com/2020/06/javefidimibo.pdf
    • https://bawemut507680349.files.wordpress.com/2020/06/xidig.pdf
    • https://jupukefef.files.wordpress.com/2020/06/22861060941.pdf
    • https://loxomelamuj.files.wordpress.com/2020/06/noginuti.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_off00006320.bin
439a19ea6cdafe0483bdaa3f55cbd3dcdfe6fbc098413c90f71be59859d76b8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6320 21112 bytes

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