PDF malware analysis — malicious · f3c71307c28b8d22

MALICIOUS

PDF

34.4 KB Created: 2021-07-06 06:25:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 4f29f333aba63867e3662a2f9c435e21 SHA-1: 04d68b6362fa39e15df74925ce88d8f120e1e70a SHA-256: f3c71307c28b8d226ccc79e043bf08640a35ec779f17f7a998e29754d9fce662

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/406889139/coin-monster-game-hack PDF link annotation
- https://www.yatrikathmandusuite.com/userfiles/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/roblox-free-roblox_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/coin-master-generator-free_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/play-games-for-robux_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/what-is-wurst_GM479516143.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/game-hunters-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/coin-master-hack-pc_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/roblox-hack-me_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/coin-master-free-mighty-lion-card_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/free-robux-no-human-verification-or-survey_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
`stream_002_off00003204.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3204	22896 bytes
SHA-256: `9b82599522f91b176eb99a6464125dfecef870f41282163690186499f4ae3fd6`
`font_01_sfnt_off00006526.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6526	17836 bytes
SHA-256: `ecea4e06c2319bfbde5a9eafaa104503e5acdd43c54713b47264e7f5b68a66df`

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