Malicious PDF — malware analysis report

Static analysis result for SHA-256 0255841317895f35…

MALICIOUS

PDF

29.9 KB Created: 2020-04-22 09:27:41 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d973af54eb2d4d251d8090b3314f6a2e SHA-1: 9ae317454cd79ef806509e9c70de4f1b836c8762 SHA-256: 0255841317895f35f631b75110eb4ec80d52196dbcb9ac8d5e8148eecb64d3bc
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, a technique often used for SEO spam or to redirect users to malicious sites. The document body, though heavily obfuscated, contains a URL that appears to be a lure for activating office software. The presence of many external links suggests a link farm or a distribution point for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9928

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://aoedigitalsolutions.com/uploads/1/3/0/5/130547812/130547812.html#activate+office+2016+kms
    • http://pix-elle-infographie.fr/uploads/1/3/0/2/130272853/eb8b9.pdf
    • http://nuukhospitality.com/uploads/1/3/0/5/130588973/lizuvat.pdf
    • http://summitnd.com/uploads/1/3/1/4/131407179/229bcbde3c6b172.pdf
    • http://beighnbridge.com/uploads/1/3/0/7/130740325/517e10bc74a.pdf
    • http://kamuko.net/uploads/1/3/0/4/130435499/87032c25cf9572.pdf
    • http://sweiver.com/uploads/1/3/0/7/130740357/2501533.pdf
    • http://misalonabc.com/uploads/1/3/1/4/131453325/zosiro_kekim_kuzibogokawaka_suxotivurob.pdf
    • http://neal-daley.com/uploads/1/3/0/7/130739169/tukov_nujifaropuvuw.pdf
    • http://voicesforearthjustice.org/uploads/1/3/0/5/130590393/venafisonevegam.pdf
    • http://watchrussia.net/uploads/1/3/0/7/130740376/tapufonuxeku-nadawoxi-sudojosagateb.pdf
    • http://glassgoblingames.com/uploads/1/3/0/3/130323181/rusixuxosefetuvow.pdf
    • http://handgunn.com/uploads/1/3/0/5/130550713/letamogava_vogigimubakok.pdf

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