Malicious PDF — malware analysis report

Static analysis result for SHA-256 90a6095462528ae4…

MALICIOUS

PDF

33.8 KB Created: 2020-03-13 14:15:43 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bb94048b7115990cea91c12a94272ae5 SHA-1: c00131bb30603e54ee0ebe285cd892271f0da580 SHA-256: 90a6095462528ae4c10f89f9e5f747f977cc0a4449c04f86f8cd5c1730299120
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, many of which are dynamically generated and point to unrelated content, characteristic of SEO spam. The primary embedded URL, 'http://pmyui.bpmtc.com/uploads/1/3/1/0/131070727/131070727.html#toto+africa+lyrics+rap+genius', suggests a lure to a page that appears to be about song lyrics. The heuristic 'PDF_SEO_LINK_FARM' strongly indicates this is a link farm designed to manipulate search engine rankings. 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://pmyui.bpmtc.com/uploads/1/3/1/0/131070727/131070727.html#toto+africa+lyrics+rap+genius
    • http://zions-salons.com/uploads/1/3/0/6/130604393/rewafoveworaxamufo.pdf
    • http://healthcarereformsurvivalguide.com/uploads/1/3/0/5/130540146/99e4f.pdf
    • http://overdrivehaulingtransport.com/uploads/1/3/0/8/130874668/481625705838b8.pdf
    • http://littleoneslearningacademy.com/uploads/1/3/0/2/130270831/zojefolofedegabature.pdf
    • http://www.cliktok.com/uploads/1/3/0/4/130489467/9539508.pdf
    • http://microtiasurgery.net/uploads/1/3/0/4/130476878/puzajajazi_jumoluzixetif.pdf
    • http://bixbyhoco.com/uploads/1/3/0/6/130620568/4721679.pdf
    • http://veripod.com/uploads/1/3/0/7/130739056/4635868.pdf
    • http://hostmaster.mredison.org/uploads/1/3/0/5/130589261/ferekijukifif.pdf
    • http://directinservicetraining.com/uploads/1/3/0/3/130323255/lebepe-pupusulunumukak.pdf
    • http://crtconcepts.com/uploads/1/3/0/4/130476607/kewesutexuraki.pdf
    • http://webmail.beechwoodproductions.ca/uploads/1/3/0/6/130621495/50f8ce5b8404c48.pdf
    • http://becauseprosknow.com/uploads/1/3/0/5/130550944/rixojojeri.pdf
    • http://happyperf.com/uploads/1/3/0/6/130604604/fabomesuduv-jetujatabexug-vufoga-wujaron.pdf
    • http://www.georadesigns.com.au/uploads/1/3/0/8/130874067/5bec9fe102.pdf
    • http://leanworkingcapital.com/uploads/1/3/0/8/130815097/9304a535302087.pdf
    • http://jchapmancreative.com/uploads/1/3/0/5/130551534/2144488bb49.pdf
    • http://www.jayleneclark.com/uploads/1/3/0/6/130620963/kawal-naxuloturiz-nujikazadup.pdf
    • http://latshawtraining.com/uploads/1/3/0/7/130775220/5320921.pdf
    • http://yougetwhatisee.com/uploads/1/3/0/6/130620468/777907b98.pdf
    • http://www.yourlogisticpartner.com/uploads/1/3/0/4/130483546/zitevewokojudu-pikunu.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_off00005fbd.bin
604163efefae4d7d02d17029d8405b2278214b0cf6046e40f01d2903c6f05d8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBD 6816 bytes

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