Malicious PDF — malware analysis report

Static analysis result for SHA-256 afa7796585ad0b5c…

MALICIOUS

PDF

34.6 KB Created: 2021-06-27 01:07:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: eb2b1eae90c5cdb2112060377b7c6902 SHA-1: 728aa127425fcde203b8b9fd741442c2941f359f SHA-256: afa7796585ad0b5c6e2bf777e800870a7a7658a7f3c3368623686c19a5b6d32e
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links and a document body that promotes game hacks and cheats, specifically for Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the 'ML_NYX_PDF_MALICIOUS' score is very high, suggesting a malicious intent to redirect users to potentially harmful content. The presence of a download button lure further supports this. The primary attack pattern involves tricking users into clicking malicious links under the guise of obtaining game advantages.

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/project-alpha-5-hack-roblox-game-hack
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/robloxs-got-talent-hack_GM431946152.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/free-robux-gamecard_GM431946152.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-daily_GM406889139.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/free-cheat-codes-for-coin-master_GM406889139.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/roblox-gift-card-online-free_GM431946152.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/is-minecraft-free-on-mac_GM479516143.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins_GM406889139.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/get-me-robux-for-free_GM431946152.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/what-is-coin-master-app_GM406889139.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/roblox-free-hair-codes_GM431946152.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/hack-roblox-paintball-frenzy_GM431946152.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/how-to-make-t-shirts-free-on-roblox_GM431946152.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-2021_GM406889139.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/how-to-hack-games-in-roblox_GM431946152.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/roblox-rocitizens-intext-cheat_GM431946152.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/join-roblox-free_GM431946152.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/free-robux-hack-generator-no-survey_GM431946152.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdf
    • https://elearning.mtsn3kediri-kota.sch.id/__statics/gudangsoal/files/how-can-you-get-minecraft-for-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000315d.bin
da33aa5a71577dc41d5813c867d59a8be5275f380026005ebb0d273b18e413f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x315D 21584 bytes
font_01_sfnt_off000060a6.bin
4705ff07692d15fb152065ebbd0fe7c789e6e652b14220d5f5335b40de61d7b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60A6 19580 bytes

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