PDF malware analysis — malicious · 98377b21ea37f1bf

MALICIOUS

PDF

44.0 KB Created: 2021-06-11 05:00:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: b3b7283d6e3d328e8279f8b3a90fbc5b SHA-1: 6126e77a8ab1c076b157a69d844bb6c03bb9e5ee SHA-256: 98377b21ea37f1bf7d594b7e441141a62182ec07d603c1153ace8c6c46b95527

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a visual call-to-action, suggesting it is designed to trick users into downloading malicious files, likely game cheats or hacks. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of external URIs and the 'password-protected archive lure' heuristic indicate a likely multi-stage attack where the document serves as a lure for further malicious downloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

Heuristics 4

Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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 https://netcdn.tw/app/431946152/pastebin-com-hack-roblox-game-hack
- http://lib.smklabor.sch.id/repository/yarxvin-roblox-hacks_GM431946152.pdf
- http://lib.smklabor.sch.id/repository/coins-master-hack_GM406889139.pdf
- http://lib.smklabor.sch.id/repository/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdf
- http://lib.smklabor.sch.id/repository/free-coin-and-spin-in-coin-master_GM406889139.pdf
- http://lib.smklabor.sch.id/repository/google-only-roblox-items-free-2021_GM431946152.pdf
- http://lib.smklabor.sch.id/repository/updated-free-roblox-shirts_GM431946152.pdf
- http://lib.smklabor.sch.id/repository/free-game-called-roblox_GM431946152.pdf
- http://lib.smklabor.sch.id/repository/youtube-how-to-get-free-robux_GM431946152.pdf
- http://lib.smklabor.sch.id/repository/best-hack-for-coin-master-2021_GM406889139.pdf
- http://lib.smklabor.sch.id/repository/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdf
- http://lib.smklabor.sch.id/repository/coin-master-free-spins-link-download-today_GM406889139.pdf
- http://lib.smklabor.sch.id/repository/need-free-spins-for-coin-master_GM406889139.pdf
- http://lib.smklabor.sch.id/repository/roblox-anti-speed-hack_GM431946152.pdf
- http://lib.smklabor.sch.id/repository/coin-master-free-blogspot_GM406889139.pdf
- http://lib.smklabor.sch.id/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdf
- http://lib.smklabor.sch.id/repository/free-minecraft-bedrock-server-hosting_GM479516143.pdf
- http://lib.smklabor.sch.id/repository/login-robux_GM431946152.pdf
- http://lib.smklabor.sch.id/repository/how-to-hack-roblox-bubble-gum-simulator_GM431946152.pdf
- http://lib.smklabor.sch.id/repository/free-spin-link-of-coin-master_GM406889139.pdf
- http://lib.smklabor.sch.id/repository/minecraft-java-server-hosting-free_GM479516143.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005023.bin` `806db3598b9c41b947359dd2c94536c9e06078761b541bd61cf7ef3003bb133a`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5023	24380 bytes
`font_01_sfnt_off000087d6.bin` `7fdbfe61abb17d80c6e8dae8cf18537faf5fa56722f737a2160982085bd30eb4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x87D6	18820 bytes

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