Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6add492c094bdf7…

MALICIOUS

PDF

36.7 KB Created: 2020-06-15 04:37:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1694b29d069ac39ba7141bc7f77fb8b SHA-1: 143400b64c545dce21b3df31b6262555d4dbc4c2 SHA-256: c6add492c094bdf7d4cabb2378934d2f21f5b3fb4d16c37118852ecc929e5c48
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are hosted on domains that appear to be part of a link farm. The document body mentions 'Oakley lens guide', suggesting a lure to entice users to click on these links. The heuristic 'PDF_SEO_LINK_FARM' strongly indicates this is a malicious SEO-based link distribution technique. No scripts were extracted, but the numerous external links are the primary vector for malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://mta-sts.mx.michellepiano.com/uploads/1/3/0/5/130540493/130540493.html#oakley+lens+guide
    • http://jackvolker.com/uploads/1/3/0/4/130483238/106676.pdf
    • http://36.wxiguln.vq.com/uploads/1/3/1/4/131453099/9b41b51ed.pdf
    • http://haylaconsulting.com/uploads/1/3/1/4/131452823/fubidusubupib-jiwesuw-fijexaben-tosuxozixadaj.pdf
    • http://cplorenzopoolyam.com/uploads/1/3/0/5/130538994/jugaxivejenet.pdf
    • http://magicalmemoriestravelcompany.net/uploads/1/3/0/6/130605443/sumaxumibow_wiwuv_wenanofij.pdf
    • http://dmbestlife.com/uploads/1/3/1/4/131437446/98584e8f9a2eb.pdf
    • https://xumufikok.files.wordpress.com/2020/06/xepipazedakalafokemumo.pdf
    • https://bavorekivaso.files.wordpress.com/2020/06/7576307563.pdf
    • https://kugigoke149047822.files.wordpress.com/2020/06/jupubaxerolidekobev.pdf
    • https://jidiluda.files.wordpress.com/2020/06/2221797165.pdf
    • https://wutapega.files.wordpress.com/2020/06/wojovewugowitugori.pdf
    • https://vomimipuze.files.wordpress.com/2020/06/xolivipomapotelakenij.pdf
    • https://xobajowupoda.files.wordpress.com/2020/06/ruxejafumefeluwipijewa.pdf
    • https://letajesuki.files.wordpress.com/2020/06/dibobuwabudekefanidogog.pdf
    • https://relopupuxa.files.wordpress.com/2020/06/pijukar.pdf
    • https://womemoz.files.wordpress.com/2020/06/sovuvogajepe.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_off0000632b.bin
21060bcc504d4250563808ca2c68efc293c53a45c8fc56fcb59b9c037059113d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x632B 10192 bytes

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