Malicious PDF — malware analysis report

Static analysis result for SHA-256 24f15d2d1cf5ea3c…

MALICIOUS

PDF

34.4 KB Created: 2020-04-07 10:29:08 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 465f68bc11df61cd34475efccb421bf3 SHA-1: ae6c56109a05ab26b106fa86c7db9210bd698c0a SHA-256: 24f15d2d1cf5ea3c705a76fed9a4998bc004d92dbf11d2d7511f0bf0f645aaad
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to similarly structured URLs on different domains. The document body suggests a lure related to playing a song on the piano, which is likely a pretext to drive traffic to these malicious URLs. The primary heuristic firing indicates a 'PDF_SEO_LINK_FARM', suggesting the document is part of a link farm designed to manipulate search engine results or redirect users to malicious content.

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://ronnieskowron.com/uploads/1/3/1/3/131379578/131379578.html#how+to+play+jingle+bells+on+piano+with+letters
    • http://architetturamcmm.com/uploads/1/3/0/5/130551162/kunurebujigofivose.pdf
    • http://whattobuyforguys.com/uploads/1/3/0/2/130289803/3016326.pdf
    • http://curated-experiences.com/uploads/1/3/0/9/130969056/3b9a9da785c9.pdf
    • http://t5inc.net/uploads/1/3/0/6/130604693/gokufujifese_pumakabi_jijab.pdf
    • http://angelicapelegrin.com/uploads/1/3/0/7/130738996/jorasedaxo.pdf
    • http://arrestekstil.com/uploads/1/3/0/2/130272481/0b995bf5184.pdf
    • http://ajslawncareandmaintenance.com/uploads/1/3/1/4/131411147/savevemasoxeba.pdf
    • http://billiondollarboysclub.net/uploads/1/3/0/4/130435684/sabevulafelus.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_off00005df2.bin
8fd58923c3eb4120252ab55a4a0e6325ae0d672d0d29b18d6e83083197821980		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF2 7872 bytes

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