Malicious PDF — malware analysis report

Static analysis result for SHA-256 92c5e38069e2130c…

MALICIOUS

PDF

37.2 KB Created: 2020-05-30 07:52:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a1f22c31fb1032a9f3fe6f7cfe0e895 SHA-1: 50e8055b1b698776087f1d14cb16188637a107f3 SHA-256: 92c5e38069e2130ca40fcea82f2ef59fa92b1fa210f2ca46177e6ce48dd4c6d6
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique often used for SEO spam or to distribute further malicious content. The primary heuristic identified a link farm with 16 external PDF links, predominantly hosted on 'mon.ai'. While no scripts were extracted, the sheer volume of outbound links suggests a malicious intent to redirect the user to potentially harmful websites.

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://purchase-good.com/uploads/1/3/1/4/131409167/131409167.html#bendy+and+the+ink+machine+bacon+soup
    • http://mon.ai/uploads/1/3/1/4/131453749/jofuxukok_ruruximapodux_vojeruzov.pdf
    • http://empowerpilatesbarre.com/uploads/1/3/0/6/130620430/bofozedab.pdf
    • http://mail2.tpicorp.com/uploads/1/3/0/6/130604300/wuweroguj.pdf
    • http://jtisiding.net/uploads/1/3/0/6/130604375/4f512f61e84f6.pdf
    • http://casanirvanaculebra.com/uploads/1/3/1/8/131871605/8902637.pdf
    • http://wilsonpta.com/uploads/1/3/0/4/130483578/motedufejube.pdf
    • http://simplymom.ca/uploads/1/3/0/7/130775841/8055676.pdf
    • http://priorityorganization.com/uploads/1/3/0/5/130588419/b19bd79999cdc99.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_off000062d6.bin
f3b7ec25cd044444cfadd5c036aa25051e7672bb4cb796687dcf421ddf106d94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62D6 10992 bytes

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