Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb106b396936eb59…

MALICIOUS

PDF

46.7 KB Created: 2020-03-19 02:24:20 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c144c719762b856d3ac758e6f493f2e0 SHA-1: 68d4f739fa6173e12d76dcb50e8c97382ed42334 SHA-256: cb106b396936eb595a544ebefd41a2e7a163be0f207a5c51bbcf89b273eb03c5
92 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains a large number of external links, many of which point to other PDF files on various domains. This pattern is indicative of a link farm or SEO spam campaign, likely designed to drive traffic or host malicious content. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, and the document body is heavily obfuscated.

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://spacetimecafesartesanais.com/uploads/1/3/0/6/130639687/130639687.html#triangulo+rectangulo+y+sus+caracteristicas
    • http://takebackministries.com/uploads/1/3/0/5/130550744/xoloxadexoru.pdf
    • http://advizher.com/uploads/1/3/0/6/130605244/zisegizefapozitigul.pdf
    • http://kuduproducts.com/uploads/1/3/0/3/130379581/revabowiwoviwe-xutiguvegove.pdf
    • http://leahj-commission.com/uploads/1/3/0/6/130640031/95624989b9e1d5.pdf
    • http://howtobeaweddingcoordinator.com/uploads/1/3/0/7/130775536/lulolevudu_gijewebuzida_jadotaxovu.pdf
    • http://jaclynkaloczi.com/uploads/1/3/0/6/130604777/ritoketarid.pdf
    • http://partoencasamujeressabias.com/uploads/1/3/0/5/130588546/garokuvidute.pdf
    • http://toobusymomsbooks.com/uploads/1/3/0/5/130588417/fojop-rokisifepajufin.pdf
    • http://injury-lawyer-south-carolina.com/uploads/1/3/0/4/130475881/falifodo_pemibesug_jogofepune_mituzabeguwazij.pdf
    • http://thirtybirds.com/uploads/1/3/0/5/130550844/muwaxazo.pdf
    • http://ismaa.in/uploads/1/3/0/7/130739640/89f9871098877.pdf
    • http://lickerishtooth.com/uploads/1/3/0/5/130590142/6d48bd4.pdf
    • http://ncballcounseling.com/uploads/1/3/0/7/130776810/zevonef.pdf
    • http://fergiebr.com/uploads/1/3/0/5/130543386/fifuteg-dalamudipevax-kelatawen-zegonibolevobib.pdf
    • http://lancelinroadhouse.com/uploads/1/3/0/4/130492689/jewebejazimebaf-bobezerijes.pdf
    • http://www.abt-accounting.com/uploads/1/3/0/8/130874123/fimuk.pdf
    • http://aselcevremetal.com/uploads/1/3/0/5/130588806/sizanisimexos.pdf
    • http://k9lane.com/uploads/1/3/0/5/130589104/gitudobesorufuvepi.pdf
    • http://atamilwaukee.com/uploads/1/3/0/5/130588906/2833320.pdf
    • http://hyperlaundry.com/uploads/1/3/0/2/130271207/2481233.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_off00007de9.bin
eed49b8ea2cf506be89ec5d56dc03200a5c7541dda2d09d19609da988ab6084f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE9 9352 bytes
font_01_sfnt_off00009fc8.bin
c048ac4ed90d63bfae46472f65f9cf6fc0bd5e75369f2d8f28771a6d96a2731c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FC8 3156 bytes

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