Malicious PDF — malware analysis report

Static analysis result for SHA-256 1261351cb5362ad6…

MALICIOUS

PDF

44.9 KB Created: 2021-05-12 14:43:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2ffb22e959208e7163c5f20ba9eab7f5 SHA-1: 09c362b82096bd951e7a2afa56ba82444f7e0b13 SHA-256: 1261351cb5362ad6188c5a14176631bb40d65ff3c8539a549356b15e7a689c8f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to files with names suggesting hacks or cheats for popular games. The primary URL, 'https://netcdn.xyz/app/479516143/minecraft-bedrock-edition-free-game-hack', is presented as a download for a game hack. This indicates a likely attempt to trick users into downloading malicious content, possibly disguised as game cheats. The ML classifier strongly supports the malicious nature of this PDF.

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 https://netcdn.xyz/app/479516143/minecraft-bedrock-edition-free-game-hack
    • http://www.emotional-training.com/storage/editor/files/coin-master-invite-friends-hack_GM406889139.pdf
    • http://www.emotional-training.com/storage/editor/files/how-to-earn-free-robux_GM431946152.pdf
    • http://www.emotional-training.com/storage/editor/files/coin-master-free-cards-link-2021_GM406889139.pdf
    • http://www.emotional-training.com/storage/editor/files/how-to-get-free-coins-in-mcpe-master_GM406889139.pdf
    • http://www.emotional-training.com/storage/editor/files/minecraft-windows-10-hacks_GM479516143.pdf
    • http://www.emotional-training.com/storage/editor/files/wurst-18-9_GM479516143.pdf
    • http://www.emotional-training.com/storage/editor/files/free-robux-site_GM431946152.pdf
    • http://www.emotional-training.com/storage/editor/files/free-robux-easy_GM431946152.pdf
    • http://www.emotional-training.com/storage/editor/files/free-domain-for-minecraft-server_GM479516143.pdf
    • http://www.emotional-training.com/storage/editor/files/master-8-ball-pool-free-coins_GM406889139.pdf
    • http://www.emotional-training.com/storage/editor/files/get-free-gold-cards-in-coin-master_GM406889139.pdf
    • http://www.emotional-training.com/storage/editor/files/best-way-to-get-free-robux_GM431946152.pdf
    • http://www.emotional-training.com/storage/editor/files/how-to-hack-roblox-jailbreak_GM431946152.pdf
    • http://www.emotional-training.com/storage/editor/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdf
    • http://www.emotional-training.com/storage/editor/files/you-promised-my-son-free-robux_GM431946152.pdf
    • http://www.emotional-training.com/storage/editor/files/free-robux-generator-without-human-verification_GM431946152.pdf
    • http://www.emotional-training.com/storage/editor/files/hack-para-coin-master-sin-verification_GM406889139.pdf
    • http://www.emotional-training.com/storage/editor/files/minecraft-free-no-download_GM479516143.pdf
    • http://www.emotional-training.com/storage/editor/files/hack-coin-master-android-game_GM406889139.pdf
    • http://www.emotional-training.com/storage/editor/files/coin-master-free-spin-link-today-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004f25.bin
24aefa167054f5a7f2c775861023964f48c1d6df5a9c12bb044bb60f260a2ba5
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F25 30720 bytes
font_01_sfnt_off00008d5d.bin
0b29718dce26c4d1fb8eff562362f22d55d4276ac23c5c88aa1b07f7376859fd
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5D 18268 bytes