Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e5c22e2e0bf5d2f…

MALICIOUS

PDF

34.3 KB Created: 2021-07-01 15:38:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 992167e93213def001a905594684eb6d SHA-1: 093bcdded72d6236919387968c7d531c4331dfc5 SHA-256: 2e5c22e2e0bf5d2fe37ebdb8e1c90e7bf7e8fc400de697d71e1ae72165333e9c
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are SEO-optimized and point to game hacks and cheats for popular titles like Roblox and Coin Master. The presence of a download button lure and a high ML classifier score indicates a malicious intent to trick users into downloading potentially harmful files. The document's structure and content strongly suggest it's part of a phishing or malware distribution campaign.

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/roblox-robux-hack-xbox-one-game-hack
    • https://radiocaxias.com.br/portal/imagens/files/coin-master-hack-online-cheat_GM406889139.pdf
    • https://radiocaxias.com.br/portal/imagens/files/free-robux-link_GM431946152.pdf
    • https://radiocaxias.com.br/portal/imagens/files/grifffin-hat-gives-free-robux_GM431946152.pdf
    • https://radiocaxias.com.br/portal/imagens/files/free-coins-on-coin-master-generator_GM406889139.pdf
    • https://radiocaxias.com.br/portal/imagens/files/minecraft-free-apk-java-edition_GM479516143.pdf
    • https://radiocaxias.com.br/portal/imagens/files/coin-master-free-blogspot_GM406889139.pdf
    • https://radiocaxias.com.br/portal/imagens/files/https-roblox-hackcom_GM431946152.pdf
    • https://radiocaxias.com.br/portal/imagens/files/android-coin-master-3433-apk-hack_GM406889139.pdf
    • https://radiocaxias.com.br/portal/imagens/files/roblox-free-in-the-computer_GM431946152.pdf
    • https://radiocaxias.com.br/portal/imagens/files/free-synapse-download-roblox_GM431946152.pdf
    • https://radiocaxias.com.br/portal/imagens/files/hack-the-coin-master-game_GM406889139.pdf
    • https://radiocaxias.com.br/portal/imagens/files/how-to-make-hawt-sauce-roblox-hack_GM431946152.pdf
    • https://radiocaxias.com.br/portal/imagens/files/how-to-hack-people-in-roblox_GM431946152.pdf
    • https://radiocaxias.com.br/portal/imagens/files/minecraft-games-to-play-for-free_GM479516143.pdf
    • https://radiocaxias.com.br/portal/imagens/files/roblox-protosmasher-free_GM431946152.pdf
    • https://radiocaxias.com.br/portal/imagens/files/rbx-gg-free-robux_GM431946152.pdf
    • https://radiocaxias.com.br/portal/imagens/files/coin-master-game-free-spin-download_GM406889139.pdf
    • https://radiocaxias.com.br/portal/imagens/files/free-coins-coin-master-today_GM406889139.pdf
    • https://radiocaxias.com.br/portal/imagens/files/check-cashed-v5-roblox-hacks_GM431946152.pdf
    • https://radiocaxias.com.br/portal/imagens/files/hack-to-get-robux-for-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f89.bin
eca1bcb836a93f483a30a3d0db3a57102c29639341a1d01cefa961623484df49
pdf-font-stream PDF embedded font (sfnt) at offset 0x2F89 22504 bytes
font_01_sfnt_off000061da.bin
d7691d82c9ca9e55c6fb2754325e03c842453cb389e8508bd34df91b784a404b
pdf-font-stream PDF embedded font (sfnt) at offset 0x61DA 18796 bytes