PDF malware analysis — malicious · 4d9c650f1a86185a

MALICIOUS

PDF

34.7 KB Created: 2021-06-29 18:20:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: c9f8b302eab3f1dd475a07208e4a8fa6 SHA-1: 854d8502d640662fe9393040afb3697b8865749d SHA-256: 4d9c650f1a86185a0d04eb5ac8906dc5e441a64c7fc3e923dfe0e582f984f4c1

62 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs and a document body that explicitly advertises free Robux and game hacks, indicating a lure for users to download potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports a malicious intent to redirect users to a download site.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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/free-robux-openrewards-game-hack PDF link annotation
- https://www.studio-dentistico-fiume.com/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/mining-saimulator-roblox-cheats_GM431946152.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/roblox-noclip-cheat_GM431946152.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/roblox-slender-man-outfit-free_GM431946152.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/free-robux-quick-and-easy-2021_GM431946152.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/game-hunters-coin-master_GM406889139.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/free-pet-snacks-coin-master_GM406889139.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/free-robux-scam-message_GM431946152.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/mc-update_GM479516143.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_002_off00002d9b.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2D9B	23160 bytes
SHA-256: `f14dbff341db0ec58b9b27f13d32501056eeb930a89139ab75207d95ecc3e7dd`
`font_01_sfnt_off00006206.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6206	19228 bytes
SHA-256: `99c45667ab21ba030c8afa18a37387ce2a1b40b79678de0312b6e2d94ea99ef8`

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