Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2d2caf504a1f96e…

MALICIOUS

PDF

44.0 KB Created: 2020-03-21 12:40:24 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: cd7fe27317e64b3c548fb192d28c28f8 SHA-1: d7b3164338339c7d65bcaa9c1766cb061fe5d71b SHA-256: e2d2caf504a1f96efee2132e262c221d9dd724f363b92b1e57387c12148ed552
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, a technique commonly used for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicated maliciousness. The document body, though partially corrupted, contains a URL that is also present in the list of extracted URLs, suggesting a deliberate attempt to direct users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://boldfutureliving.com/uploads/1/3/0/5/130588617/130588617.html#direcci%C3%B3n+por+competencias+evaluaci%C3%B3n+y+coaching+caso+practico
    • http://perfusionexpert.com/uploads/1/3/0/9/130969449/vojenup.pdf
    • http://kitchengadgetsreviews.net/uploads/1/3/0/7/130738911/5839978.pdf
    • http://myhappyeverydaylife.com/uploads/1/3/0/5/130588596/2855577.pdf
    • http://www.atlantaairportoffices.com/uploads/1/3/0/9/130969264/gebegiziv.pdf
    • http://drybarfranchise.com/uploads/1/3/0/8/130874338/rozelimefal.pdf
    • http://o2sales.top/uploads/1/3/0/6/130621004/kurid.pdf
    • http://capturingmoes.com/uploads/1/3/0/5/130551015/c6a214a8.pdf
    • http://parashantiyoga.com/uploads/1/3/0/4/130476581/e8048bc08b6171.pdf
    • http://keencricketcoaching.com.au/uploads/1/3/0/2/130272880/29aac37b.pdf
    • http://www.artisansbycj.com/uploads/1/3/0/6/130621048/nutumikegijoruf_fufozivabonide_vakeniboso.pdf
    • http://m.kaltydesigns.com/uploads/1/3/0/8/130813669/vesavan.pdf
    • http://www.michellelovetttherapy.com/uploads/1/3/0/8/130874430/xuwozubas-subozi-fojasuredopov-gaxajimawek.pdf
    • http://tahomahome.com/uploads/1/3/0/2/130274166/3659227.pdf
    • http://franklinlavoie.com/uploads/1/3/0/5/130539235/8f767aa46fb.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_off00007edc.bin
a080bddcc1c0584ddbeb2e963b2a1f9216e6e02d662a72bc3ae41df0fd8ce9a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDC 9140 bytes

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