Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e8e93410094b336…

MALICIOUS

PDF

41.4 KB Created: 2020-03-30 16:02:53 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a914bd3c2234bf379f311791a8b0e4a9 SHA-1: 0856ae67d831a2e2dd8b2884456bcd6240979c50 SHA-256: 2e8e93410094b33684292de08703d9df3df081494d6043b525843e046ee5e167
92 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier with high confidence. Static analysis revealed a large number of external links, a technique often used in SEO poisoning or phishing campaigns to redirect users to malicious content. The document body contains garbled text but includes references to the URLs, suggesting they are integral to the document's purpose.

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://lists.accordionapocalypse.com/uploads/1/3/1/1/131164424/131164424.html#red+venosa+de+haller+pdf
    • http://carhomes.net/uploads/1/3/0/4/130483940/226f49d.pdf
    • http://tsleeve.com/uploads/1/3/0/3/130324191/2447702.pdf
    • http://daileemorrone.com/uploads/1/3/0/6/130621248/9563834.pdf
    • http://shannonsharper.com/uploads/1/3/0/5/130589399/6756540.pdf
    • http://mta-sts.mail.amandalewispilates.com/uploads/1/3/0/6/130621258/136b9a.pdf
    • http://sundaysupperseastbay.com/uploads/1/3/0/2/130289754/pejido.pdf
    • http://www.ybfa.co.uk/uploads/1/3/0/2/130292148/3f636.pdf
    • http://salvis-pupusas.com/uploads/1/3/0/5/130543771/piwedumavud.pdf
    • http://7wcowhorses.com/uploads/1/3/0/7/130776734/5601654.pdf
    • http://ulbsllc.com/uploads/1/3/0/4/130489475/8370968.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_off00006c33.bin
f3c4752061e7231c31444cbe6663e45145466ba713eca957a62240871c2f07e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C33 9608 bytes
font_01_sfnt_off00008dcd.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DCD 2652 bytes

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