PDF malware analysis — malicious · 8077b9bc071f70be

MALICIOUS

PDF

33.4 KB Created: 2021-06-19 17:41:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 06c0272d13042c038979b25b70db91bf SHA-1: 9a70411c42ed1b97c5eaf9162530997d35e2ed87 SHA-256: 8077b9bc071f70beabb750db489cedd3624143bfb12d4e21e4f27e9f3407064f

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document employs a lure of 'free Robux' and game hacks to entice users to click on an embedded URL. This URL, http://netcdn.co/app/431946152/frobux-free-robux-game-hack, likely leads to a second-stage payload or phishing page. The ML classifier strongly indicated maliciousness, and the PDF structure itself points to a common social engineering tactic.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
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/frobux-free-robux-game-hack PDF link annotation
- https://www.impactlive.ca/userfiles/files/hacks-de-chat-roblox_GM431946152.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/sk8r-roblox-free_GM431946152.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/free-robux-clicker_GM431946152.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/haxteam-free-robux_GM431946152.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/free-robux-spam_GM431946152.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/car-dealer-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/roblox-redline-hack_GM431946152.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/free-roblox-exploits-2021_GM431946152.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/fast-to-use-roblox-hack-scrpits_GM431946152.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/auto-redeem-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/free-base-roblox_GM431946152.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/snapes-free-download-roblox_GM431946152.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/admin-script-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/how-to-hack-roblox-admin-commands-script_GM431946152.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/how-to-make-free-roblox-bloxburg_GM431946152.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/how-do-you-hack-robux_GM431946152.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/free-synapses-roblox_GM431946152.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/roblox-passwort-hack_GM431946152.pdfIn PDF document text
- https://www.impactlive.ca/userfiles/files/roblox-how-to-look-cool-for-free-2021_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
`font_00_sfnt_off00002d00.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2D00	22340 bytes
SHA-256: `55424910cbfe8f41855f0977310ba37c12df2a15c4f12415d1f3da8287a20bad`
`font_01_sfnt_off00005e84.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E84	18716 bytes
SHA-256: `41490e225d0049174701a8874b543fa01b523c4d704dfe46b4a3455163861833`

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