Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9d9fcb2f7119fc6…

MALICIOUS

PDF

34.6 KB Created: 2020-04-07 02:40:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ab1696d2d99163c68eec6aa119b1db70 SHA-1: a76a27c1fcd76e6407f138238ab1f2575c9b1766 SHA-256: e9d9fcb2f7119fc6e3ad1c6f2401591ff2b8f796dd0c7649f85550e46d8c6774
92 Risk Score

Malware Insights

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

The PDF document is identified as malicious due to a high number of embedded external links, a technique often used for SEO link farming or to distribute further malicious content. The document body presents itself as a textbook, likely a lure to disguise the malicious intent. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://caribbeanportsinternational.net/uploads/1/3/1/3/131383916/131383916.html#fundamentals+of+management+ricky+griffin+8th+edition
    • http://primetimesolarenergyllc.us/uploads/1/3/0/4/130488213/julajilekovodo.pdf
    • http://sprout.joburg/uploads/1/3/0/7/130740465/e2fb4bec41303.pdf
    • http://equalbalance.org/uploads/1/3/0/2/130271229/c5756b067.pdf
    • http://itpnc.com/uploads/1/3/0/8/130873782/3048349.pdf
    • http://agapeassitedliving.com/uploads/1/3/0/4/130435578/lodojibuxup-todatovilivipub-tevem-nuvujep.pdf
    • http://moderntechnique.org/uploads/1/3/0/6/130604533/dudaf.pdf
    • http://jordanslighting.com/uploads/1/3/0/9/130969254/lunusuzazekewet-nerapoxabeve-gerosupaweb.pdf
    • http://vulnerablechildcarefoundation.org/uploads/1/3/0/6/130621019/3d4940.pdf
    • http://kandeboutique.com/uploads/1/3/0/5/130588724/xezuvulubet.pdf
    • http://�bersport.de/uploads/1/3/0/7/130775045/12233.pdf
    • http://cahabafarms.com/uploads/1/3/0/5/130590384/bb0c8ae8.pdf
    • http://thrifty.garden/uploads/1/3/0/4/130483070/1713413.pdf
    • http://brightconsultingco.com/uploads/1/3/0/6/130639386/luwaxavuzovibu.pdf
    • http://employeeconnect.xyz/uploads/1/3/0/6/130603827/lawabivoli.pdf
    • http://bornbroke.net/uploads/1/3/0/5/130539992/sugosame.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_off00005fb1.bin
37136116a85dba154330ce9df0d3931552a2102333fdf0b6a9f7387a263149f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB1 7468 bytes

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