PDF malware analysis — malicious · a4fac89ff8538d50

MALICIOUS

PDF

34.2 KB Created: 2021-07-08 07:20:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 92a1e05ba5870daba32536a3306213e5 SHA-1: c637c6f6ee6611dd2e268f4d48bd254211571021 SHA-256: a4fac89ff8538d5090636b7d9a3fde3c3bb18737f78c6adbf68a3bf951ba0b8c

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/roblox-free-robux-hack-game-hack PDF link annotation
- http://studio-dentistico-fiume.com/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/hack-spin-coin-master_GM406889139.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/dll-injector-roblox-free_GM431946152.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/hacking-mad-games-in-roblox_GM431946152.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/free-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/hacks-roblox-funcinan_GM431946152.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/get-free-clothes-in-roblox_GM431946152.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/roblox-lawsuit_GM431946152.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/roblox-free-body-block_GM431946152.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/free-group-with-over-1k-members-roblox_GM431946152.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/roblox-jailbreak-cheat-codes-and-hacks-for-samsung_GM431946152.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/how-to-hack-someone-on-roblox-with-google-chrome_GM431946152.pdfIn PDF document text
- http://studio-dentistico-fiume.com/files/robux-generator-2021-free_GM431946152.pdfIn PDF document text
- https://www.studio-dentistico-fiume.com/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
- https://www.roblox.com/.IIn 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_off00002fcd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FCD	22176 bytes
SHA-256: `c312273703b22cb60ad2694026471a404385c267324c127f15f6cacd674fd22c`
`font_01_sfnt_off000060f5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60F5	18960 bytes
SHA-256: `4bbd4e0b11a4de08a120ed278073258e380cedc6aab10c61138cdabd5952661a`

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