Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a629b8882407c53…

MALICIOUS

PDF

34.7 KB Created: 2020-06-14 08:11:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 066add9d09cbf70a6ba19775a3a6e8e9 SHA-1: 2749cf7de4a5382642cc1132e6540f503969e49f SHA-256: 1a629b8882407c532834e8ff9046bc2f2b2029c76da9f2707b2dd63f1c5a34da
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, many of which point to similarly structured URLs on different domains, indicating a link farm or SEO abuse tactic. The document body, though partially corrupted, suggests a lure related to psychological diagnostics. The primary malicious URL identified is http://red-river-zoo.mynewonline.store/uploads/1/3/1/3/131383671/131383671.html#processo+psicodiagn%25C3%25B3stico+e+as+t%25C3%25A9cnicas+projetivas, which likely serves as a landing page for a phishing or malware distribution campaign.

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://red-river-zoo.mynewonline.store/uploads/1/3/1/3/131383671/131383671.html#processo+psicodiagn%25C3%25B3stico+e+as+t%25C3%25A9cnicas+projetivas
    • http://bvhspto.org/uploads/1/3/1/8/131856122/5707755.pdf
    • http://markoneentertainments.com/uploads/1/3/1/4/131437490/7164108.pdf
    • http://74-123-72-16.mgwnet.com/uploads/1/3/0/2/130291463/6c82317ab.pdf
    • http://companypast.com/uploads/1/3/2/3/132303371/lidit.pdf
    • http://jerrygarciaart.gallery/uploads/1/3/1/1/131164066/8801966.pdf
    • http://webmail.nemoetterem.hu/uploads/1/3/1/4/131452816/a96e81ec.pdf
    • http://musclegearasia.net/uploads/1/3/1/4/131407849/sasebumotajola.pdf
    • http://webdisk.suisekirocks.com/uploads/1/3/0/2/130287873/d9100.pdf
    • http://scientopiadiscoverycenter.com/uploads/1/3/0/2/130274376/e167befd0cea33.pdf
    • http://seleje.com/uploads/1/3/0/2/130287929/711842.pdf
    • http://streettees.net/uploads/1/3/0/3/130323526/3478852.pdf
    • http://mail.teachenglishstepbystep.com/uploads/1/3/1/6/131637797/besizod.pdf
    • http://psbypaulo.com/uploads/1/3/0/8/130813738/0094641.pdf
    • https://lofamanu.files.wordpress.com/2020/06/fidumekadil.pdf
    • https://zimufugu.files.wordpress.com/2020/06/sokematibovobafuwenudenas.pdf
    • https://lagasig.files.wordpress.com/2020/06/soginixotigosotiruj.pdf
    • https://tegedow.files.wordpress.com/2020/06/32747469479.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_off00005770.bin
1647e7a25de90e0b6d4be04c00ad94af7fe519b8813ddf94427918772d05ddcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5770 11644 bytes

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