PDF malware analysis — malicious · 43781e7da6c92cd9

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 16:00:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 01e8a89561e49806f6cdfc6f9a3c4cd4 SHA-1: 44161e7ec2be6e168ea8dbf1cdecaa7d2cf23e5f SHA-256: 43781e7da6c92cd9a39227c8bc32a8f7eeae234e630e38ac13572eeaddc75ac3

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for 'free Robux' and game hacks, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the presence of numerous links to similar lure content reinforces this assessment. The primary attack vector appears to be social engineering via a malicious link embedded within the document.

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.tw/app/431946152/free-robux-no-verification-or-survey-2021-game-hack PDF link annotation
- https://topkoreamart.com/public/upload/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/free-robux-2021-april_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/how-to-get-a-free-gamepass-on-roblox_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/free-builders-club-roblox-2021_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/claim-roblox_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/how-do-doload-hacks-in-roblox_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/roblox-tix-hack-cheat-engine_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/roblox-how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/roblox-hack-script-animations_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/free-minecraft-server_GM479516143.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/how-you-get-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
`font_00_sfnt_off00002fcf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FCF	21808 bytes
SHA-256: `5d32f3349c61f067806d3ec300467f579d267ec7095b31652c731da818c99c1f`
`font_01_sfnt_off00005faa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FAA	19772 bytes
SHA-256: `a441bd845f25f30d9b35deb0a49928c69a030f2d5bccbb8c502819d18c42e29e`

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