Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bbbcf6eed82bcdb…

MALICIOUS

PDF

37.8 KB Created: 2020-06-29 20:53:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd2f24a9657ce9b7d9756bdf0a5a2ffc SHA-1: f2d9d1f2f609ee544aead1b2f461b799d994a9d7 SHA-256: 3bbbcf6eed82bcdba0cc2b856305e5aec1bfd96c747b4ac47279783a1ce8ffb2
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified as a link farm, with the primary lure being 'Barbie shopping mall games free'. The ML classifier strongly indicated maliciousness. The document's structure and the presence of numerous SEO-optimized links suggest an attempt to redirect users to potentially malicious content or 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://files.ciampatime.com/uploads/1/3/1/8/131857308/131857308.html#barbie+shopping+mall+games+free
    • http://the-typhon.com/uploads/1/3/0/6/130621903/5a45bc97e.pdf
    • http://ridingpointradio.net/uploads/1/3/0/7/130776861/sodakixozuz.pdf
    • http://professionalgrowthservices.com/uploads/1/3/0/4/130435649/detigekederepaw.pdf
    • http://youdefinenatural.com/uploads/1/3/0/6/130621397/zijexine-sakaweduke.pdf
    • http://mail.graveyardclub.com/uploads/1/3/0/7/130738566/07b37a99d07b66.pdf
    • http://webmail.access7apploud.com/uploads/1/3/2/6/132695813/9876571.pdf
    • http://blacktigersecurityservicesllc.com/uploads/1/3/1/3/131380966/193361.pdf
    • https://lixotudus.files.wordpress.com/2020/06/jaxemomen.pdf
    • https://nipatojubob.files.wordpress.com/2020/06/dalotafirojalimineb.pdf
    • https://bujeralox206344462.files.wordpress.com/2020/06/figawowex.pdf
    • https://kijomevoduno.files.wordpress.com/2020/06/woruzenizegufavidenewage.pdf
    • https://kiveguw.files.wordpress.com/2020/06/vedigozisagamegovomo.pdf
    • https://finuwebilib68862671.files.wordpress.com/2020/06/wutenelopevudavamir.pdf
    • https://jetawuboke.files.wordpress.com/2020/06/gubetezunufod.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057eb.bin
3df294a4470732fb41d1ca2d694d3508f14adca0e2aefc093f5042268c776a9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57EB 5212 bytes
font_01_sfnt_off00006964.bin
68e7c047c4ef96520d51158344827b910c2c5e323ee8382c5ed62a85f736ff90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6964 9964 bytes

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