PDF malware analysis — malicious · 3949f6f3a5d90eef

MALICIOUS

PDF

35.6 KB Created: 2021-07-07 15:21:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 9b807bc216daf97b2fc974792bc6ae58 SHA-1: ef5c10cd0474013cddc571dc27683dc495c6727b SHA-256: 3949f6f3a5d90eef7eac9720c6640db50c4fee0c24cd598fd8145375b59aaa5a

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-money-hack-game-hack PDF link annotation
- https://pfpro.de/ckfinder/userfiles/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/get-roebucks-com_GM431946152.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/robux-boost_GM431946152.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/free-apk-mod-coin-master_GM406889139.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
- https://pfpro.de/ckfinder/userfiles/files/coin-master-free-spins-link-today-twitter_GM406889139.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_off000031c3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31C3	23160 bytes
SHA-256: `dfdc5465494ca19e2f3f8e5bff1c7939260ce4107a65dda30d61faa0b6bf24f5`
`font_01_sfnt_off0000664e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x664E	19032 bytes
SHA-256: `203e1121f486a9f27f7b8b1bc344d44945bd10d034850d35ac5f84883fff97b4`

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