Malicious PDF — malware analysis report

Static analysis result for SHA-256 72ea55b1121c9e3a…

MALICIOUS

PDF

33.2 KB Created: 2021-06-30 08:03:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3bcc643416205ddb549d2db2ac5af558 SHA-1: 74bafb9efbb4e04254fe8d78bc71d734a48c96a5 SHA-256: 72ea55b1121c9e3ad1612a1851eb8d32ad92763357b8c6ccb966f0bc9e01c5d2
102 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, many of which are presented as resources for obtaining free in-game currency or cheats for popular games like Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of such links, suggesting a tactic to drive traffic to potentially malicious sites. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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://netcdn.co/app/431946152/app-cheats-online-roblox-game-hack
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/how-do-i-get-free-robux_GM431946152.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-codes-2021_GM431946152.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/2021-free-spins-on-coin-master_GM406889139.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/roblox-free-usernames-and-passwords-wolfkami23_GM431946152.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/roblox-online-free_GM431946152.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/como-hackear-coin-master-gratis_GM406889139.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/roblox-data-breach_GM431946152.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/minecraft-handbook_GM479516143.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/minecraft-pc-download-free-full-version_GM479516143.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/hack-to-protect-village-on-coin-master_GM406889139.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free_GM479516143.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/free-minecraft-alts_GM479516143.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/can-i-get-free-robux_GM431946152.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/comoser-hacker-en-roblox_GM431946152.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/how-to-get-free-clothing-on-roblox_GM431946152.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/roblox-hack-2021-deutsch_GM431946152.pdf
    • http://elearning.madagresik.sch.id/__statics/gudangsoal/files/can-i-wear-clothes-i-make-free-on-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002bfb.bin
b90b1bc62f4b2303a7433041290e22cd6caf52fb5a7bf15bde11955c8c883df3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFB 22140 bytes
font_01_sfnt_off00005d1a.bin
7d05326d000e8e4116537ab73bf3e7a8e92032b04e828145705bcf7d29414c06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1A 19052 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.