Malicious PDF — malware analysis report

Static analysis result for SHA-256 bffd1fd8859bdd88…

MALICIOUS

PDF

34.3 KB Created: 2020-05-05 06:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6a708083a21a346157c30726f86e6f30 SHA-1: afa5bbe44f0be1340396153cf88ab756626da02e SHA-256: bffd1fd8859bdd88dc207b71b63bfb56aa445f1c380740ff50bc86cd6c72360f
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links to other PDF files hosted on various domains. This technique is often used for SEO poisoning or to distribute further malicious content. The heuristic firings indicate a link farm strategy, with the dominant host being yukayekemaoconuco.com. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the immediate intent beyond link distribution.

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://kaleruy.net/uploads/1/3/0/5/130539654/130539654.html#carennac+france+tourist+information
    • http://yukayekemaoconuco.com/uploads/1/3/0/2/130289570/7c8bb8fc35f.pdf
    • http://commtechcommunications.com/uploads/1/3/1/1/131164479/c5a634.pdf
    • http://yorktownplumbingandheating.com/uploads/1/3/0/2/130288394/nezobopanobokigiwo.pdf
    • http://jljohnsonproperties.com/uploads/1/3/1/3/131398237/9424110.pdf
    • http://whatisgreshamslaw.com/uploads/1/3/0/5/130588921/7390151.pdf
    • http://georgeandshelly.com/uploads/1/3/0/7/130776891/9645047.pdf
    • http://capturingthequeen.com/uploads/1/3/0/6/130639440/joxukidefibeke.pdf
    • http://radiojuggernaut.com/uploads/1/3/1/4/131437160/moxaradozidi.pdf
    • http://apexplacementaz.com/uploads/1/3/0/8/130874496/3bb892b381f9f51.pdf
    • http://medisinanatural.org/uploads/1/3/1/4/131453256/vexulavukaba.pdf
    • http://thestorydoula.com/uploads/1/3/0/6/130640225/sadosubabugiwe.pdf
    • http://graceyoolaw.com/uploads/1/3/0/4/130483981/niwupu_pepabiponijefig_buwuvi.pdf
    • http://gonzosautotronicdiagnosticcenter.org/uploads/1/3/0/4/130436108/suvoxiduwur-xijizekader-wotowiluzutab-nesejofotono.pdf
    • http://coppercactusvintage.com/uploads/1/3/1/3/131398154/7259328.pdf
    • http://gamer666.net/uploads/1/3/1/6/131637020/6665245.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • 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_off00005913.bin
82a677d9611d3c87dfe5c7a055343f1ba52a837a3db00284d87202567a312786		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5913 10716 bytes

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