Malicious PDF — malware analysis report

Static analysis result for SHA-256 902eed0eb73821ed…

MALICIOUS

PDF

50.6 KB Created: 2020-06-09 07:13:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a39d90980402e7b39f2199e7234b62a6 SHA-1: 87b01421cedf987c493b2f6e65d128c2a4053d98 SHA-256: 902eed0eb73821edca0bb2b1ae288b6f6e61c77cf68761020d8e0caa4c9d69db
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The presence of a link farm heuristic and the ML classifier flagging the PDF as malicious strongly suggest this is a malicious document. The document body contains a reference to 'Dragon ball z super episode 130 youtube', likely a lure to attract clicks to the embedded malicious URLs.

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://cassiusmaintenance.com/uploads/1/3/1/3/131380894/131380894.html#dragon+ball+z+super+episode+130+youtube
    • http://theflamingoclub.co/uploads/1/3/0/6/130621000/junodolonegap-norekono-renobabeguvip-kozozanof.pdf
    • http://pointcookhealth.com/uploads/1/3/0/4/130476502/a128fd86d3ad204.pdf
    • http://levelupgameconsulting.com/uploads/1/3/0/6/130640200/xoxugewofof.pdf
    • http://seyahstyle.com/uploads/1/3/1/4/131453329/regogununov-werapope-vopekekes-befaberuzigo.pdf
    • http://taskforcesecurity.org/uploads/1/3/0/3/130323930/tumokisoxazelilaxo.pdf
    • http://energy-frequencies.com/uploads/1/3/0/5/130539009/1561719.pdf
    • http://sophistable.com/uploads/1/3/1/3/131383646/lifozasaj.pdf
    • http://news.elite-diving.com/uploads/1/3/1/3/131398559/cf927f8a1cc4.pdf
    • http://gomezsecurity.com/uploads/1/3/0/7/130739318/mefaj-jaduwobuzew-wefavik-jelimuf.pdf
    • http://qsrcoaching.com/uploads/1/3/1/4/131407705/1f4a02e71ad204f.pdf
    • https://kugomiregu812748447.files.wordpress.com/2020/06/4616550830.pdf
    • https://xifoburufo.files.wordpress.com/2020/06/54569364680.pdf
    • https://molozujepaxu.files.wordpress.com/2020/06/42885795109.pdf
    • https://jirironap.files.wordpress.com/2020/06/94072944815.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006379.bin
eb8cf0cec52ebd35de27c1362d489be3ae3b468050ad0fd7ce02046626f4fd2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6379 8292 bytes
font_01_sfnt_off00007f07.bin
4401111291d75429db015146696d21fe3010f4185cee87cf93f8d689242bd88e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F07 12732 bytes
font_02_sfnt_off0000a6e5.bin
e0777f6a1bd995d4c9df845dda5573f86e03ad3e6a71cbf9cbbf6e8544b72fca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6E5 16188 bytes

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