Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ab756253bf81b8c…

MALICIOUS

PDF

48.7 KB Created: 2020-04-01 16:16:31 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b9bce9d5177bdf627123b17fc82e0db4 SHA-1: 79b3d8d6d44020c389b4b38d4983a6b65ea658da SHA-256: 1ab756253bf81b8c06b6cf667263a2730dbd50ccf3e5ad3e7b2b852c18501c15
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links to other PDF files hosted on various domains, indicative of a link farm or a distribution network. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this malicious intent. While no scripts were extracted, the sheer volume of outbound links and the ML classification point towards a malicious document designed to redirect users to potentially 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://bshppopup.com/uploads/1/3/0/7/130776262/130776262.html#como+se+realiza+una+grafica+de+control
    • http://gsentertainment.net/uploads/1/3/0/4/130488273/zijobaziv-tokisab-mugasunigos.pdf
    • http://cnie.eu/uploads/1/3/0/7/130739351/6404183.pdf
    • http://getcyberinsurance.com/uploads/1/3/0/2/130273761/lilemaromebobo.pdf
    • http://jrksales.com/uploads/1/3/1/3/131398517/6d7d149bf90.pdf
    • http://yesteryearpics.com/uploads/1/3/0/2/130273582/banexolokoxaso.pdf
    • http://postcardsfrombudapest.com/uploads/1/3/0/6/130620937/2b3c7730d95950.pdf
    • http://muvnao.com/uploads/1/3/0/4/130476091/lewis.pdf
    • http://erikaduffyadventures.com/uploads/1/3/1/0/131069832/poselokibu.pdf
    • http://aliicorner.com/uploads/1/3/0/2/130289427/mavofixaxamokozo.pdf
    • http://ashleytl.com/uploads/1/3/0/5/130540146/961745.pdf
    • http://wattt.xyz/uploads/1/3/1/3/131383604/vuwesaxaxewazef.pdf
    • http://townpark.info/uploads/1/3/0/7/130738921/mekakigewugexo.pdf
    • http://tutarjetadescuento.com/uploads/1/3/0/6/130621134/8ad626a855a.pdf
    • http://fourcornersfibercollective.org/uploads/1/3/0/8/130814297/rekeriwuwesojib.pdf
    • http://amysastrology.com/uploads/1/3/0/8/130873962/8da8a.pdf
    • http://uwogh.com/uploads/1/3/0/7/130776157/zivol.pdf
    • http://miko-trans.pl/uploads/1/3/0/2/130271158/lomul-webalitav-vasogil.pdf
    • http://lahevea.org/uploads/1/3/0/7/130738633/bimevomiwixiselani.pdf
    • http://www.kjfteak.com/uploads/1/3/0/5/130588182/loxubovasamur-jonozokepe-volajolevi-kenid.pdf
    • http://jazzinthe20sand30s.com/uploads/1/3/0/5/130590477/4566314.pdf
    • http://smallspacesavvy.com/uploads/1/3/0/6/130620353/4713502.pdf
    • http://annchang85q.com/uploads/1/3/0/5/130590665/b0ea0ac0.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_off000092a5.bin
7154d87fcde23add8e08d96a7c279623e5fe9f47d8182c4b690f1579b0d08092		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92A5 9008 bytes

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