Malicious PDF — malware analysis report

Static analysis result for SHA-256 89bc3011c43ab736…

MALICIOUS

PDF

35.1 KB Created: 2021-06-25 21:23:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6a63bead4bf68fe62c1952e49b09f6bf SHA-1: 1534ca3f326a52f3042eaba0264da8ad5c8ff05c SHA-256: 89bc3011c43ab736366360cf5f5b878e32430df7e3622128cd73614e5e2e616f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous links to external websites, many of which are SEO-optimized and promise free in-game items or hacks. The ML classifier strongly indicates maliciousness, and the presence of a download button lure reinforces the deceptive nature of the document. The primary goal appears to be directing users to potentially malicious download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/free-roblox-injectors-list-game-hack
    • http://pustaka.pasca.unand.ac.id/repository/how-to-hack-roblox-jailbreak-new-hack-2021-working_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/change-your-birthday-to-this-date-for-free-robux_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-codes-2021-october_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/roblox-rs-hack-2021_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/robux-hack-without-human-verify_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/hack-roblox-net-no-human-verification_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/coin-master-free-spins-daily_GM406889139.pdf
    • http://pustaka.pasca.unand.ac.id/repository/roblox-coll-free-hair_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/free-roblox-game-card-get-your-code_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/how-to-make-a-free-dominus-in-roblox_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/mobilehacks4u-free-roblox_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/badge-hack-roblox_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/hack-roblox-fixed-pc-infinity-heroes-x100_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/roblox-jailbreak-hack-free_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/how-to-get-free-robux-on-ipad-2021_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/coin-master-free-spin-codes_GM406889139.pdf
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/free-robux-2021-no-verification_GM431946152.pdf
    • http://pustaka.pasca.unand.ac.id/repository/how-to-get-free-robux-copy-and-paste-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003248.bin
740f2ef8d413907700669b97f13ab274497a4ac8f4c959730663cd5a3f4889cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3248 22324 bytes
font_01_sfnt_off000063f8.bin
027437a160bacd75649b1a0082796dc7ff7340b9fbaca1ccca2b5672b721b2f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63F8 19060 bytes

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