Malicious PDF — malware analysis report

Static analysis result for SHA-256 f242016bf25e5f77…

MALICIOUS

PDF

34.1 KB Created: 2020-06-04 06:57:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8489260c2dae7c4322512d7a86ca6616 SHA-1: 1538afe19c2106107951709b2318a0f0d73f9ad3 SHA-256: f242016bf25e5f771df51b4c6dafe4fed562858cf93a5110fb5c5b270db3a882
62 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a 'PDF_SEO_LINK_FARM', indicating it hosts a large number of external links. The document body, though partially corrupted, includes the URL 'http://calvarychurchloveland.org/uploads/1/3/0/5/130541817/130541817.html#como+hacer+un+asador+de+carne+de+ladrillo' and numerous other PDF links, suggesting a tactic to drive traffic to potentially malicious or SEO-farmed websites. No scripts were extracted from this sample.

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://calvarychurchloveland.org/uploads/1/3/0/5/130541817/130541817.html#como+hacer+un+asador+de+carne+de+ladrillo
    • http://xn--farmartjnstimark-2nb.se/uploads/1/3/0/3/130379361/c55e17ddb8aa.pdf
    • http://serenityreflexology.org/uploads/1/3/0/5/130588703/8624020.pdf
    • http://beaglescomics.com/uploads/1/3/0/2/130291544/sutuzis.pdf
    • http://scotchandnonsense.com/uploads/1/3/0/6/130620430/xowetuwajofibowax.pdf
    • http://vitug.net/uploads/1/3/0/7/130739478/7fdf1c79102.pdf
    • http://calvarychurchloveland.org/uploads/1/3/0/5/130541817/terms.html
    • http://calvarychurchloveland.org/uploads/1/3/0/5/130541817/dmca.html
    • http://calvarychurchloveland.org/uploads/1/3/0/5/130541817/policy.html
    • https://misabuvewag.files.wordpress.com/2020/06/foxurunulafifemo.pdf
    • https://pokavin.files.wordpress.com/2020/06/valalagofuxa.pdf
    • https://pefabujisoki.files.wordpress.com/2020/06/98443057250.pdf
    • https://zomurominon.files.wordpress.com/2020/06/tujezu.pdf
    • https://wunolet428062258.files.wordpress.com/2020/06/nidebikalofo.pdf
    • https://jigadeg188695464.files.wordpress.com/2020/06/98267515868.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_off000058eb.bin
c5887658a0e7bd6bd09adc163020eec94640577d72bcba809a4483ae7175c539		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58EB 10536 bytes

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