Malicious PDF — malware analysis report

Static analysis result for SHA-256 e86651dee6a8ab00…

MALICIOUS

PDF

31.0 KB Created: 2020-04-18 12:57:59 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f38a61849c0264a19baab42f66675ecf SHA-1: f9b6ccfbd3e797ae9098ac0abd7ef23793b7e10f SHA-256: e86651dee6a8ab008784e3a9ad31ba724144244af1dc5d76fe80564a11d45e1b
94 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are structured in a way that suggests a link farm or SEO manipulation tactic. The document body mentions 'Baadshah video songs' and includes metadata indicating it was generated by wkhtmltopdf, further supporting the idea of a lure page. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous unknown URLs indicates a high likelihood of malicious intent, such as redirecting users to phishing sites or malware downloaders.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://youbrewchicago.com/uploads/1/3/0/8/130814805/130814805.html#baadshah+video+songs
    • http://thomasschow.com/uploads/1/3/0/2/130271154/7697101.pdf
    • http://gofullsyn.com/uploads/1/3/0/6/130604414/korinezim_zidazipovoxog.pdf
    • http://fabulousfuntravel.net/uploads/1/3/1/4/131455680/6352166.pdf
    • http://auntbellbakes.com/uploads/1/3/0/8/130814576/43633cdab06baa6.pdf
    • http://muellerwood.works/uploads/1/3/0/6/130620880/gomanupijafi-novijojito-mudawarazeb-gowukin.pdf
    • http://prettyempireservices.com/uploads/1/3/0/3/130379150/7862985.pdf
    • http://jsealw.com/uploads/1/3/1/4/131437573/fulozavawumamiliduk.pdf
    • http://bit.ly/2XDqfDa
    • 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_off0000508c.bin
7802a4a747df242fd8e6b61a50d60a44b068ea98c462053bcf8f2ed20138d1d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x508C 8308 bytes

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