PDF malware analysis — malicious · 21fd0c7ebb9c1e5c

MALICIOUS

PDF

34.0 KB Created: 2021-07-03 20:53:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: c9799fc9476895ccc5db8f515d062c32 SHA-1: 8d0b2f0112662bdb2cb43351c41ff46a5b511595 SHA-256: 21fd0c7ebb9c1e5cbd36417ab51f50f35f406ac8eed4157678313a808d65d6b1

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple lures related to game hacks and free in-game currency, directing users to download a file from a suspicious URL. The presence of an MFA lure suggests an attempt to harvest credentials or session tokens. The ML classifier strongly indicates maliciousness, and the embedded URLs are consistent with malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

MFA / one-time-code harvesting lure high SE_MFA_LURE

Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
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.tw/app/479516143/mcpe-download-game-hack
- https://duoledesign.com/image/data/files/comment-tre-un-hacker-sur-roblox_GM431946152.pdf
- https://duoledesign.com/image/data/files/how-to-make-a-free-robux-website_GM431946152.pdf
- https://duoledesign.com/image/data/files/get-100-robux-for-free-promo-code_GM431946152.pdf
- https://duoledesign.com/image/data/files/hack-coin-master-game_GM406889139.pdf
- https://duoledesign.com/image/data/files/one-time-payout-free-robux_GM431946152.pdf
- https://duoledesign.com/image/data/files/cm-daily-spins_GM406889139.pdf
- https://duoledesign.com/image/data/files/roblox-cheat-engine-bypass-2021_GM431946152.pdf
- https://duoledesign.com/image/data/files/coin-master-hack-apk-download-2021_GM406889139.pdf
- https://duoledesign.com/image/data/files/free-robux-meme_GM431946152.pdf
- https://duoledesign.com/image/data/files/roblox36com-free-robux_GM431946152.pdf
- https://duoledesign.com/image/data/files/free-spins-and-coins-coin-master_GM406889139.pdf
- https://duoledesign.com/image/data/files/free-robux-on-ipad-pro_GM431946152.pdf
- https://duoledesign.com/image/data/files/coin-master-free-blogspot_GM406889139.pdf
- https://duoledesign.com/image/data/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdf
- https://duoledesign.com/image/data/files/is-roblox-free-on-nintendo-switch_GM431946152.pdf
- https://duoledesign.com/image/data/files/is-there-a-free-version-of-minecraft_GM479516143.pdf
- https://duoledesign.com/image/data/files/coin-master-free-daily-spins-link-2021_GM406889139.pdf
- https://duoledesign.com/image/data/files/roblox-free-hack-robux-2021_GM431946152.pdf
- https://duoledesign.com/image/data/files/free-spins-coin-master-2021-today_GM406889139.pdf
- https://duoledesign.com/image/data/files/roblox-character-free_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00003044.bin` `719dceb0faf2bbb0fe40295152cf869745674915412f6a777d89c65ea85ad7fe`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3044	22140 bytes
`font_01_sfnt_off0000615e.bin` `9158b95a41da82deb58e902ec4c5b7843adbff013b9b6420353e3c47105fb3e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x615E	18532 bytes

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