PDF malware analysis — malicious · 64aa976daab9eb68

MALICIOUS

PDF

42.5 KB Created: 2021-05-17 10:02:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 9af6ca97bf390a8524e0e66e60586d5b SHA-1: e0f549f86f16f3cddfabe6f0cec57d10a250a101 SHA-256: 64aa976daab9eb68da0f00e23ae893ec618d13618dd7b60aa2902e5ba3bedba4

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a document body that promotes free in-game currency and hacks for popular games like Robux and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the ML classifier strongly suggests maliciousness. The primary URL, https://netcdn.xyz/app/431946152/how-to-get-free-robux-without-surveys-game-hack, is likely the initial lure, with the other linked PDFs potentially serving as a link farm or redirect mechanism.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/431946152/how-to-get-free-robux-without-surveys-game-hack
- http://fm-express.de/images/websites-that-give-free-robux_GM431946152.pdf
- http://fm-express.de/images/coin-master-hack-https-coinms-net_GM406889139.pdf
- http://fm-express.de/images/weird-roblox_GM431946152.pdf
- http://fm-express.de/images/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdf
- http://fm-express.de/images/coin-master-free-spins-and-coins_GM406889139.pdf
- http://fm-express.de/images/free-robux-codes-2021_GM431946152.pdf
- http://fm-express.de/images/earn-free-robux_GM431946152.pdf
- http://fm-express.de/images/free-robux-hack-no-human-verification_GM431946152.pdf
- http://fm-express.de/images/free-robux-com-roblox_GM431946152.pdf
- http://fm-express.de/images/how-to-get-free-minecoins-in-minecraft_GM479516143.pdf
- http://fm-express.de/images/rewardex-robux_GM431946152.pdf
- http://fm-express.de/images/my-minecraft-account-was-hacked_GM479516143.pdf
- http://fm-express.de/images/hack-coin-master-for-free_GM406889139.pdf
- http://fm-express.de/images/roblox-free-robux-com_GM431946152.pdf
- http://fm-express.de/images/how-to-get-free-robux-easy-hack_GM431946152.pdf
- http://fm-express.de/images/how-to-change-roblox-username-for-free-2021_GM431946152.pdf
- http://fm-express.de/images/how-to-get-minecraft-for-free-2021_GM479516143.pdf
- http://fm-express.de/images/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdf
- http://fm-express.de/images/10-robux_GM431946152.pdf
- http://fm-express.de/images/coin-master-invite-friends-free-spins_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004a6a.bin` `0037bae6d1a6c06359e694a008b311bf28fb0cca0b560f011d6f644b9c42e1fc`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A6A	24016 bytes
`font_01_sfnt_off0000814a.bin` `402aebe8c34fdbdb56c6d5ac0c879f316ccc47677bd032b34ef61ae0ac5a4f59`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x814A	19060 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.