Malicious PDF — malware analysis report

Static analysis result for SHA-256 40f6341054a3a39c…

MALICIOUS

PDF

54.1 KB Created: 2020-04-11 02:27:18 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b40f5ac438187d4a0707a648a1dd6d72 SHA-1: c247f3c6f5032b35ec846436eae8ba52751ea335 SHA-256: 40f6341054a3a39ca20e7e46f45cad38ee9f62efceff517a55d6bef97711cbbf
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It contains a large number of external links, many of which point to similarly structured URLs on different domains, suggesting a link farm or SEO poisoning attempt. One of the extracted URLs is http://74-123-77-236.mgwnet.com/uploads/1/3/0/6/130639408/130639408.html#food+for+pomeranian. The document body contains garbled text and the title 'Food for pomeranian', which appears to be a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://74-123-77-236.mgwnet.com/uploads/1/3/0/6/130639408/130639408.html#food+for+pomeranian
    • http://dannydorito.com/uploads/1/3/0/6/130621000/164381b7e8f1cf.pdf
    • http://goldencoupe.com/uploads/1/3/0/2/130289353/921db41.pdf
    • http://rachaelhudes.com/uploads/1/3/0/3/130379123/135146.pdf
    • http://movementmode.com/uploads/1/3/0/6/130639121/finefonim-mibaleferaw-detati.pdf
    • http://myteamaloha.com/uploads/1/3/0/6/130604639/8f2c134fe.pdf
    • http://gracewins.co/uploads/1/3/0/6/130603814/c9b3fc119c211fa.pdf
    • http://knowlio.com/uploads/1/3/0/5/130538875/b15e0d833.pdf
    • http://serenityrowe.com/uploads/1/3/0/6/130605044/pizixaxewimevef-siwarazix.pdf
    • http://boonvaluations.com/uploads/1/3/1/4/131438244/6228753.pdf
    • http://zli.people.ua.edu/uploads/1/3/0/4/130435500/4120848.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_off000095fd.bin
138dfab369bfd9c7f28bea6bbcf87fbb2c254646589ce1ed62094c8bb9eb8da4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95FD 8464 bytes
font_01_sfnt_off0000b650.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB650 16036 bytes

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