Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6d08a3a36015cdc…

MALICIOUS

PDF

67.6 KB Created: 2020-03-29 05:55:50 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1ea729660b223e220e9100f2fb706b3e SHA-1: f820ea8e82ebd7ea605b49fc51538685fed1e95b SHA-256: e6d08a3a36015cdc1209494e0fb08da5a91a6b442e96d2d14119622eb9e06acf
94 Risk Score

Malware Insights

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

The PDF file contains a deceptive title related to 'Jrr tolkien beowulf pdf' and embeds a large number of external links, constituting a link farm. The ML classifier strongly indicated maliciousness. The primary attack pattern involves luring users to click on these links, which likely lead to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://alvarezorganics.com/uploads/1/3/1/4/131408344/131408344.html#jrr+tolkien+beowulf+pdf
    • http://grassrootsarts.org/uploads/1/3/1/3/131379246/meratum-gavesow.pdf
    • http://comicblogger.net/uploads/1/3/0/2/130271113/pivaditopixal.pdf
    • http://zaysplace.com/uploads/1/3/0/7/130739928/ledatarifosav_robegas.pdf
    • http://doubleiv.com/uploads/1/3/1/4/131406449/3dc8f5405be5c.pdf
    • http://novaenterprisesolution.com/uploads/1/3/0/6/130621732/baxetiserebapomerap.pdf
    • http://medwaybaptist.com/uploads/1/3/0/5/130539940/3585610.pdf
    • http://seuratechnologies.net/uploads/1/3/0/5/130551153/zamanokijivapap.pdf
    • http://jlc.press/uploads/1/3/0/6/130620885/9174626.pdf
    • http://representacoespicinin.com/uploads/1/3/0/6/130639903/fijadadofakaxep-badozoliposif.pdf
    • http://compassionatecanines.org/uploads/1/3/0/6/130639524/2ad513.pdf
    • http://holoae.org/uploads/1/3/0/4/130436125/6220533.pdf
    • http://ezwash.biz/uploads/1/3/0/4/130476814/gakumixi_ruzefajemujur_zugonilib_tuvupixem.pdf
    • http://untswe.com/uploads/1/3/0/6/130604354/kefezuzolonefiraw.pdf
    • http://prestigemotorsportspr.com/uploads/1/3/0/7/130775678/8107831.pdf
    • http://patlakescc.net.au/uploads/1/3/0/2/130288802/duwemo.pdf
    • http://lasferramantas.com/uploads/1/3/0/5/130539584/gadolali.pdf
    • http://foobur.com/uploads/1/3/1/1/131164293/4045244.pdf
    • http://jhtour.net/uploads/1/3/0/7/130740231/vamidagolumuligaxe.pdf
    • http://jgamble.com/uploads/1/3/0/2/130289618/bodekosij.pdf
    • http://www.sesserautobody.inafwb.org/uploads/1/3/0/5/130551267/6697448.pdf
    • http://optimalairconsolutions.com/uploads/1/3/1/3/131379759/koboxulofuto.pdf
    • http://bankshomecare.com/uploads/1/3/0/6/130639116/6910806.pdf
    • http://islandclubreccenter.com/uploads/1/3/0/3/130324451/f9388335a0e1.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7e8.bin
6a02a811db4e1a1bb3e34f1ad1977e81242e889abde3308fa1761e0725a547d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7E8 9228 bytes
font_01_sfnt_off0000ea0f.bin
b3affdfdfee497c2d3230853582529cf395d265bfdbb8cde7d84ae9c33602211		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA0F 16036 bytes

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