Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcd3ceb3909e0fc7…

MALICIOUS

PDF

48.6 KB Created: 2020-03-24 09:00:50 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ad0cd36c9c8534c645de59e9c63809e2 SHA-1: c7eb1340c299a4cb14e9d5779cbc9faa798b2d75 SHA-256: dcd3ceb3909e0fc7f34236fac11f33205b16128314c6e331ce1693a727f03a36
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

This PDF document exhibits characteristics of a link farm or SEO spam, as indicated by the PDF_SEO_LINK_FARM heuristic firing. It contains a large number of external URLs pointing to other PDF files hosted across numerous domains. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern appears to be directing users to a vast network of external resources, potentially for malicious redirection or to inflate search engine rankings for harmful content.

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://loyalroyalkush.com/uploads/1/3/0/2/130287989/130287989.html#diccionario+de+la+biodescodificacion+pdf
    • http://www.my-hy-f.com/uploads/1/3/0/8/130874614/gexaroteduw_doxulakiripovab_turotopak_rixefoxaneb.pdf
    • http://designsbycyndylou.com/uploads/1/3/0/5/130541837/4932345.pdf
    • http://positivevibez.care/uploads/1/3/0/5/130588943/fazerexobuzuku-kimegebadapixu-rejaxoxi.pdf
    • http://220-ilo.ilovedropmint.com/uploads/1/3/0/5/130544295/wifararozesike.pdf
    • http://futile23.goteamonline.com/uploads/1/3/1/0/131069923/2244789.pdf
    • http://lucindalyonsfineart.com/uploads/1/3/0/6/130604181/3089dc729a7.pdf
    • http://13conversations.org/uploads/1/3/0/3/130313440/lefafut_meketizupox_josafifo_pewekexif.pdf
    • http://snaptown.net/uploads/1/3/0/7/130739309/d2d41f6bc4.pdf
    • http://phonesex4cheap.com/uploads/1/3/0/2/130287915/02c8f2f7.pdf
    • http://saverahwaypark.org/uploads/1/3/0/5/130546432/repiritumu_xokejudofi.pdf
    • http://www.kavellasalis.com/uploads/1/3/0/6/130621026/6674005.pdf
    • http://scoresgrill.ca/uploads/1/3/0/4/130483939/vazorujeduj.pdf
    • http://coloursofscotland.com/uploads/1/3/0/5/130550712/xogilisuxojevezuxiru.pdf
    • http://drkimchicago.com/uploads/1/3/0/7/130739303/xavojoxegamixefe.pdf
    • http://comicinformer.com/uploads/1/3/0/6/130604113/wulaferilot.pdf
    • http://kompete.net/uploads/1/3/0/7/130739094/tukosop.pdf
    • http://bethlehemhouse.org/uploads/1/3/0/5/130551000/6778711.pdf
    • http://susanbutlerhursonmd.com/uploads/1/3/0/7/130739775/dd59bf.pdf
    • http://mennalaw.com/uploads/1/3/0/2/130289393/2842508.pdf
    • http://pushthenote.com/uploads/1/3/0/6/130604667/bba2cd528f3220.pdf
    • http://sturgillestore.com/uploads/1/3/0/5/130588501/dusepesesu_luzikiroguz_sijixufomagawel_susawa.pdf
    • http://charismasifferman.com/uploads/1/3/0/5/130551488/7183843.pdf
    • http://jasonwilke.com/uploads/1/3/0/8/130873955/vukigidovebajo.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_off0000925e.bin
5648e365cae1bd48ba79ed62a94de4f28bde761ca7fc2481f1f427616707db43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x925E 9388 bytes

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