Malicious PDF — malware analysis report

Static analysis result for SHA-256 428d6342fc42cb6d…

MALICIOUS

PDF

34.2 KB Created: 2021-06-27 23:51:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4b6cddcab7ee0ef4ba50606ede90f383 SHA-1: 19465747f1bccc70404fbc6658cfe0bca9528ab4 SHA-256: 428d6342fc42cb6d96bbce7e80247d518377454dca1e2b712fb237568c2e6a9d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links and a primary URL that lead to pages offering game cheats and hacks, specifically for Roblox and Minecraft. The heuristic firings indicate a PDF link farm designed to direct users to external resources, likely for downloading malicious applications or further phishing attempts. The presence of a 'download button' lure reinforces the social engineering aspect of this attack.

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/bux-life-earn-free-robux-game-hack
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/roblox-updated-hack_GM431946152.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/free-catalog-roblox-script_GM431946152.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/hack-bleach-new-hope-roblox_GM431946152.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/how-to-get-any-username-in-roblox-hack_GM431946152.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/roblox-dino-cheat_GM431946152.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/roblox-how-to-get-free-robux-no-survey_GM431946152.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/how-to-start-a-minecraft-server-for-free_GM479516143.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/free-roblox-injector-for-cb_GM431946152.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/minecraft-bedrock-server-hosting-free_GM479516143.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/cheat-roblox-tower-defense_GM431946152.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/how-do-i-get-free-robux-without-paying_GM431946152.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/how-to-buy-robux-for-free_GM431946152.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021-ios_GM431946152.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/roblox-jailbreak-hack_GM431946152.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/is-it-possible-to-get-free-robux_GM431946152.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/free-apps-to-get-free-roblox_GM431946152.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/how-to-create-clan-in-roblox-for-free-account_GM431946152.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/roblox-free-exploits-v3rmillion_GM431946152.pdf
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/roblox-jailbreak-cheats-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_off00002ffe.bin
3f0143655e8811f911a853714e72f0a706c44fffc6206cd99315502d8e67cfe7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFE 22180 bytes
font_01_sfnt_off0000611d.bin
176a4dbeceafbd534d6c29e592f8a58255fe3da205c91dc2d6fb078c977ab79b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x611D 18836 bytes

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