Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dc5cc16b4e98a34…

MALICIOUS

PDF

33.5 KB Created: 2020-03-24 23:48:43 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 03bdc2ec4532096bb4f6b22b65d1d476 SHA-1: 20809a65f42675d7fb0748c83e4c2cf8b71284dd SHA-256: 3dc5cc16b4e98a3499b201775885c5122404d344f4a79b802a6275a48d9ad7eb
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, indicating a link farm or redirection scheme. The ML classifier strongly suggests malicious intent. The document body is heavily obfuscated but contains URLs that are part of this link farm. The primary goal appears to be directing users to a network of websites.

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://brianspoolservicing.net/uploads/1/3/0/6/130604979/130604979.html#disney+baby+winnie+the+pooh+dots+
    • http://www.malletforlewisvillemayor.com/uploads/1/3/0/7/130775154/witoxaponenusevazi.pdf
    • http://clowncartragedy.com/uploads/1/3/0/7/130776814/4f8c6e50d.pdf
    • http://rebeccafrenchlmt.com/uploads/1/3/0/6/130620651/1653588.pdf
    • http://mpconsultoriaecursoslivres.com/uploads/1/3/0/7/130739393/347cf23.pdf
    • http://www.freevideos.gardeninghq.net/uploads/1/3/1/0/131070071/dedaxajodovemip-rinebom-ximelebed-kuboju.pdf
    • http://evosys.systems/uploads/1/3/0/7/130776452/xebuxusod.pdf
    • http://kmu-verband.ch/uploads/1/3/0/7/130774966/totatuzusuze-wibiwipit-jutaxabuj.pdf
    • http://decommissioninggom.offsnetevents.com/uploads/1/3/0/6/130620747/farasuvimusada_wafav_girexepusu.pdf
    • http://irvineelectricalservices.net/uploads/1/3/1/0/131069935/5720363.pdf
    • http://bellemodas.com/uploads/1/3/0/2/130288549/jijolovinofekuzaxolu.pdf
    • http://ozimek.net/uploads/1/3/0/7/130740141/tabokuwo-nuzudaretina-kipiz-duwivebesani.pdf
    • http://reicoinvestment.com/uploads/1/3/0/6/130621758/5742703.pdf
    • http://webmail.mackenziefreed.com/uploads/1/3/0/2/130289214/futigavepisezen.pdf
    • http://darwinandgenesis.com/uploads/1/3/0/7/130740113/8288021.pdf
    • http://swclink.com/uploads/1/3/0/5/130550835/7e2396d1.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_off00005bc4.bin
67c2c69300ee3dcaa078906ea5fdf28f1fc4e1d727094b07d08902a7d1c2ba98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC4 7888 bytes

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