Malicious PDF — malware analysis report

Static analysis result for SHA-256 097da61c4ea0c3db…

MALICIOUS

PDF

28.9 KB Created: 2020-04-08 01:44:07 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4ccca991e853de24f6cf02a57e705f25 SHA-1: af0710deff4f14ac0aad0e2c4fc038cc442202a3 SHA-256: 097da61c4ea0c3db307220d625273edffce0cd295b69f817faf93e7dcb8c677f
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many of which point to other PDF files with numeric slugs. This pattern is indicative of a link farm or SEO manipulation scheme, which can be used to host malicious content or distribute malware. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dalelashsholisticsangha.com/uploads/1/3/1/4/131410685/131410685.html#praise+his+holy+name
    • http://amatowoodcrafts.com/uploads/1/3/1/3/131379439/lebewojeriwob-pawobupazawevid.pdf
    • http://cfingrp.com/uploads/1/3/0/8/130813030/ranesaxiponorutise.pdf
    • http://bewellnourishment.org/uploads/1/3/1/3/131379875/fifokovorem-taketuruk.pdf
    • http://hishandscreations.com/uploads/1/3/0/9/130968949/vonepaf_zujetobademinat.pdf
    • http://autorijschoolschiedam.com/uploads/1/3/0/6/130620919/5057cca6.pdf
    • http://landongaryyoung.com/uploads/1/3/1/0/131070918/3178086.pdf
    • http://watersportsrep.com/uploads/1/3/1/3/131383333/e303bdcd.pdf
    • http://apurdylab.com/uploads/1/3/1/3/131379382/jakelive.pdf
    • http://oxfordbaptistchapel.com/uploads/1/3/0/3/130323141/kovibulelij.pdf
    • http://neiborhoodchristianschools.com/uploads/1/3/0/6/130604626/faxosupum.pdf
    • http://kimberlylopezportfolio.com/uploads/1/3/0/4/130476244/ramibege.pdf
    • http://prasquad.com/uploads/1/3/0/9/130968943/1392197.pdf
    • http://paanlovers.com/uploads/1/3/0/8/130813586/tekofubugalis.pdf
    • http://craftier-you.com/uploads/1/3/0/5/130551720/tojunalusutalig-tukibuzetikop-zesowupejuzu.pdf
    • http://kelaesthetics.com/uploads/1/3/1/3/131379543/7fb74.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000548f.bin
f055bb15f84a1173c260916deecca6a85b882f2704091debfda82be300f334bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x548F 6264 bytes

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