Malicious PDF — malware analysis report

Static analysis result for SHA-256 e291850251c64e9c…

MALICIOUS

PDF

43.0 KB Created: 2020-04-01 22:34:41 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 010c5f40bc7365bf5c541f5b438198e6 SHA-1: 8c48b21ed18d492f81ccadd3c8e4fd5ff8ad20a9 SHA-256: e291850251c64e9c85424ebee62412f9f4bfdf3755ee5f4e4485f0a0e53816cf
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO poisoning tactic. The document body, though partially corrupted, references 'Komatsu wb140 operators manual', indicating a lure to disguise the malicious intent. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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://srgonline.us/uploads/1/3/0/8/130873769/130873769.html#komatsu+wb140+operators+manual
    • http://kennyhphotography.com/uploads/1/3/0/4/130475936/740542.pdf
    • http://davidbexte.com/uploads/1/3/0/3/130313044/sejuroz_wiwubafonezor_jesutemo_bajagubiwubad.pdf
    • http://3ravensathens.com/uploads/1/3/0/8/130814471/kibanafuvejub_vuxatetunef_jogusa_xewilutexiri.pdf
    • http://torbushcustomcreations.net/uploads/1/3/0/6/130604692/litoxutufeka.pdf
    • http://kailash-beauty.com/uploads/1/3/0/5/130539926/xumelubusitan-vemuxidiva.pdf
    • http://wecancenters.com/uploads/1/3/0/4/130478481/tebejuguj_pukapenabelakel_gopig_bipizunixebized.pdf
    • http://ready4golf.net/uploads/1/3/0/4/130476511/1071070.pdf
    • http://faroutrocketry.space/uploads/1/3/0/9/130969654/7630360.pdf
    • http://ctwhale.com/uploads/1/3/0/7/130738607/d017461a68f343.pdf
    • http://restorationridesllc.com/uploads/1/3/0/8/130813998/1419631.pdf
    • http://southernisland.org/uploads/1/3/0/4/130483273/sapidine.pdf
    • http://dasrausa.org/uploads/1/3/0/4/130436218/4221107.pdf
    • http://kimchibabe.com/uploads/1/3/0/4/130488157/51132eac37d.pdf
    • http://finleybroswood.com/uploads/1/3/1/4/131437593/junezuga.pdf
    • http://gillettebikeshop.com/uploads/1/3/1/4/131454986/godavipadogebetupex.pdf
    • http://iamconfidence.org/uploads/1/3/0/7/130739726/dolomajif.pdf
    • http://aprilreneephotography.com/uploads/1/3/0/7/130739897/xajigefu-pebepa-diloposuw.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_off00007dd1.bin
3ff19500a626afdfa4f192c2b28d895b1b63614d9839b03b29b12580727a6ffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD1 8692 bytes

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