Malicious PDF — malware analysis report

Static analysis result for SHA-256 b679ff80080d8e1c…

MALICIOUS

PDF

35.9 KB Created: 2021-06-27 02:20:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5cc25a7735670e6e8065950407c95bd6 SHA-1: 34bb7761e6d2b298e7c57f8ee3807b6af9ddb4e1 SHA-256: b679ff80080d8e1cb9cd94ef5a4461bad47e9035b5356af72d24ed23b2861584
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a document body that explicitly advertises game cheats and in-game currency for popular games like 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 malicious intent. The primary URL, http://netcdn.co/app/431946152/hack-for-roblox-jailbreak-downloads-game-hack, likely serves as the download source for a malicious payload.

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/hack-for-roblox-jailbreak-downloads-game-hack
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/free-robux-wheel_GM431946152.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-usa-2021_GM406889139.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/how-do-you-get-free-roblox-money_GM431946152.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/best-way-to-hack-coin-master_GM406889139.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/coin-master-spins-gratis_GM406889139.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/ways-to-get-free-robux_GM431946152.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/minecraft-pe-server-hosting-free_GM479516143.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/how-to-get-free-tix-on-roblox-2021_GM431946152.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/coin-master-free-spin-no-offers_GM406889139.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/cool-minecraft-hacks_GM479516143.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-2021_GM406889139.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/free-realistic-minecraft-texture-packs_GM479516143.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/minecraft-hacks-pc_GM479516143.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/roblox-cheat-engine-64-speed-hack_GM431946152.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/get-coin-master-cards-free_GM406889139.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/are-minecraft-realms-free_GM479516143.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/free-roblox-catolog-items-may-2021_GM431946152.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/moonactive-coin-master_GM406889139.pdf
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/free-robux-codes-not-used_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000309f.bin
9f02d7b56c2af0c44ea490c4baef4527782e26ddd065a2108fb180ad97cf9e70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x309F 23936 bytes
font_01_sfnt_off000065e1.bin
9907eb6443d003868994f05dccca45628d2682396bffdb7d2a41850c87a988b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E1 19612 bytes

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