Malicious PDF — malware analysis report

Static analysis result for SHA-256 5afdfff39c65af9c…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 22:04:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 005ec1664b63ada818e3099a2eed2752 SHA-1: 153b93a5138f1188f1ddaa51c7c989e71e21c6ed SHA-256: 5afdfff39c65af9c6fed6e7a3892a2f5507784ffc4084732aa7eadb01b57c7ec
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized links for game-related cheats and free currency. The primary URL, http://netcdn.tw/app/479516143/how-to-get-minecraft-java-for-free-game-hack, suggests a lure for obtaining free game items. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it being part of a malicious campaign, potentially distributing malware or leading to phishing 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.tw/app/479516143/how-to-get-minecraft-java-for-free-game-hack
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/is-minecraft-education-edition-free_GM479516143.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/roblox-free-hair-girl_GM431946152.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/how-to-get-2021-robux-for-free_GM431946152.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-iphone_GM431946152.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/roblox-place-rewards_GM431946152.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/free-coins-for-coin-master_GM406889139.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/roblox-code-carte-cadeau-hack_GM431946152.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/aimbot-download-roblox_GM431946152.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/funny-faces-for-clothings-on-roblox-free_GM431946152.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/free-tiktok-accounts-and-passwords_GM835599320.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/free-robux-no-survey-or-human-verification_GM431946152.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/coin-master-free-download-pc_GM406889139.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/is-roblox-free-on-nintendo-switch_GM431946152.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/how-do-you-hack-roblox_GM431946152.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/roblox-jump-hack-bit-slicer_GM431946152.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/tiktok-free-booster_GM835599320.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/obbys-august-2021-free-robux_GM431946152.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/minecraft-pe-hacked-client-download_GM479516143.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/roblox-free-clothes-hack_GM431946152.pdf
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/how-to-noclip-on-roblox-with-cheat-engine-64-jailbreak_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033c4.bin
8a7a3ef4fa86909971fed09cb5dddbf8c7e5a393a5f089c8a7f339d144782a8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33C4 21680 bytes
font_01_sfnt_off00006367.bin
ee0fd3b8161b5983970ad4bc3604837358645b2154b845f85ded903745611adb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6367 18444 bytes

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