Malicious PDF — malware analysis report

Static analysis result for SHA-256 32bb721bc229218b…

MALICIOUS

PDF

37.1 KB Created: 2020-04-23 01:48:47 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 036efb95726942aaecb84b3de1b83675 SHA-1: ad3f40d81764f8b4db79968cf81d43c2caaef76c SHA-256: 32bb721bc229218b54bb96aef319ee1a6c4c8cb0a38dbbb7d83cd3267679796c
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, many of which are numerically or generically named, suggesting a link farm for SEO manipulation or malware distribution. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains a URL that appears to be part of this link farm, reinforcing the malicious intent. No scripts were extracted from this sample.

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://changeofheartmentoring.com/uploads/1/3/1/6/131606992/131606992.html#authorization+letter+template+signature
    • http://katyaszewczuk.com/uploads/1/3/0/4/130435619/mopimekiva-pexazedogum-lusuxozunufi-gebenejegulu.pdf
    • http://biblebasedmedicine.net/uploads/1/3/0/7/130739146/5533828.pdf
    • http://betsyharris.com/uploads/1/3/0/6/130639404/4269122.pdf
    • http://unleashu.org/uploads/1/3/0/4/130483125/jifogetobapudopure.pdf
    • http://atelierthehaus.com/uploads/1/3/0/5/130551483/9301891.pdf
    • http://e-dci.com/uploads/1/3/0/9/130969313/4c4e2767c1bbf2.pdf
    • http://francoisemathieumillet.com/uploads/1/3/0/6/130605440/ritad.pdf
    • http://decalremovalkit.com/uploads/1/3/1/3/131398417/tujebasotag.pdf
    • http://lotharm�ller.de/uploads/1/3/0/3/130313221/5607f336.pdf
    • http://allyaschbacher.com/uploads/1/3/0/9/130969607/5666256.pdf
    • http://digitalbaseltd.org/uploads/1/3/1/3/131379168/4afa417b0.pdf
    • http://rbmcoaching.com/uploads/1/3/1/3/131379671/laxofesosozoxetu.pdf
    • http://legraf3d.com/uploads/1/3/0/2/130272582/3435305fef5ec0e.pdf
    • http://timelessevolution.net/uploads/1/3/0/8/130874358/wufiles.pdf
    • http://atelierthehaus.com/uploads/1/3/0/5/130551483/93
    • 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_off00006c9c.bin
0ccd63937587aa5b5bcf2c21443d9cc6835dcd957e6b386f26e904b4ff56297b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9C 7024 bytes

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