PDF malware analysis — malicious · 19b7aaa5df067674

MALICIOUS

PDF

34.3 KB Created: 2021-06-29 08:10:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: f33302497605260d586b64d04ea4d9c5 SHA-1: c4ddf574ed10f672f526e53b8e35be0d06ec9ec2 SHA-256: 19b7aaa5df067674c2fce433965fce9f5ea5b4fb73573069c46c4b3e7974de31

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are presented as 'free generators' or 'hacks' for popular games like Roblox and Coin Master. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically flags this behavior. The document body also contains a prominent URL, likely intended to trick the user into clicking and downloading a malicious payload or visiting a phishing site.

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/free-t-shirt-roblox-design-game-hack PDF link annotation
- http://charivne.info/ckfinder/userfiles/files/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/free-roblox-skin-codes_GM431946152.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/free-tiktok-fans_GM835599320.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/how-much-pubg-uc-cost_GM1330123889.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/roblox-obby-gives-free-robux_GM431946152.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/coin-master-hack-online-download_GM406889139.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/free-robux-come_GM431946152.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/coin-master-home_GM406889139.pdfIn PDF document text
- http://charivne.info/ckfinder/userfiles/files/free-spins-coin-master-ios-2021_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_off0000307e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x307E	21912 bytes
SHA-256: `d3a55477210e7b60a52bc5dee9515e1d2c0e4f9649551561402e2aca32b6c198`
`font_01_sfnt_off0000606f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x606F	19240 bytes
SHA-256: `51ddf06ce95f66282d9328ce19da06e39d2d1d784a9fb17c0e03b0d83505f1bc`

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