Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b7db9b5cf49f0ab…

MALICIOUS

PDF

35.7 KB Created: 2020-04-07 10:07:09 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: fe0837cb157356bccd89801622a6550d SHA-1: afeeceadf4116dcfcc725d68054c4056db9aeafd SHA-256: 1b7db9b5cf49f0abc7d7c9d04f1811b94dbbec474711b30a4beed6fbb57391ee
70 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links to other PDF files, a technique often used for SEO poisoning or to host malicious content. The document body includes a lure for 'fate hollow ataraxia game download' and points to the URL http://nikkocraft.com/uploads/1/3/0/4/130483266/130483266.html#fate+hollow+ataraxia+game+download, suggesting a social engineering attempt to trick users into downloading potentially harmful files. The heuristic PDF_SEO_LINK_FARM firing further supports this malicious intent.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nikkocraft.com/uploads/1/3/0/4/130483266/130483266.html#fate+hollow+ataraxia+game+download
    • http://threeelephantsand.co/uploads/1/3/0/9/130968996/41449.pdf
    • http://katshea.net/uploads/1/3/0/9/130969764/7484597.pdf
    • http://dumpitgame.com/uploads/1/3/0/6/130622084/bodikus.pdf
    • http://elainaluciaphotography.com/uploads/1/3/0/7/130740589/kizixumetemotu.pdf
    • http://hqafertilitycenter.com/uploads/1/3/0/6/130621052/tebazore.pdf
    • http://soloforsenate.com/uploads/1/3/0/7/130738684/gonatipo.pdf
    • http://woodmerehomes.net/uploads/1/3/0/6/130621280/3144576.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_off000061a6.bin
81cb03447fa55e3f9c639e730549c3829b61a278bfaeca997b26faad11e6104a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A6 8504 bytes

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