Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d7daf7db4727505…

MALICIOUS

PDF

34.2 KB Created: 2021-06-28 07:14:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5c8c8e2cd43932dd5ddb5d0daf0fb33b SHA-1: bb6edf0f3abebbb2c3b51d655c66226cd5cd5e77 SHA-256: 4d7daf7db4727505d7e6136c859024c3ac6fa7e86de1dc47b3e9da3325b1090b
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external sites, many of which are SEO-optimized PDFs related to game cheats and hacks for popular games like Roblox and Coin Master. The document body explicitly mentions 'Instalar Roblox Hackeado' and includes a URL pointing to a download for 'instalar-roblox-hackeado-game-hack', indicating a lure for potentially unwanted or malicious software. The presence of a large number of external links, many with numeric slugs, suggests a link farm designed to attract users searching for cheats.

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/instalar-roblox-hackeado-game-hack
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/coin-master-free-spin-best-link_GM406889139.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/minecraft-games-free-to-play-online_GM479516143.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/hack-of-robux_GM431946152.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/download-hacked-games-coin-master_GM406889139.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/free-coin-and-spin-for-coin-master_GM406889139.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-by-clicking_GM431946152.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/roblox-jailbreak-hack_GM431946152.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/free-coins-on-coin-master_GM406889139.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-2021_GM406889139.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/can-you-get-banned-for-hacking-in-roblox_GM431946152.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/roblox-dominus-free_GM431946152.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/how-to-get-100-free-spins-on-coin-master_GM406889139.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/free-robux-websites-that-actually-work-2021_GM431946152.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/tiktok-viewer-free_GM835599320.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/twitter-coin-master-free-spins_GM406889139.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-2021_GM431946152.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/wwroblox-cheatcom_GM431946152.pdf
    • http://elearning.mtsn2bolmong.sch.id/__statics/gudangsoal/files/free-fire-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031fe.bin
cd2fa44cca67809a2a404798e7d6098d8fc872f18779c1253e04cb6d2f38ebcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31FE 21444 bytes
font_01_sfnt_off000060d5.bin
fcc28c066346f053f784eef0129424c78c147c491b42c58da8c05cd1c54ed806		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60D5 18936 bytes

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