PDF malware analysis — malicious · 63cfcefaa8559487

MALICIOUS

PDF

35.6 KB Created: 2021-07-07 08:23:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 829f85f1ab6b5ab72e7867ff9ad8e2e7 SHA-1: c2f7586e9242c66d4a9551cc77e45fe197803034 SHA-256: 63cfcefaa855948754b2e932815dd4d3863d4c6d8a99cd801dcc3badb78e5185

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/free-robux-no-verification-2021-game-hack PDF link annotation
- https://www.yatrikathmandusuite.com/userfiles/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/free-roblox-characters_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/coin-master-hack-mod-apk-unlimited-spins_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/download-hacked-games-coin-master_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/are-tiktok-free-views-without-verification_GM835599320.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
- https://www.yatrikathmandusuite.com/userfiles/files/hacks-and-cheats-for-coin-master_GM406889139.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_off0000340d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x340D	22088 bytes
SHA-256: `cff43be3d9bcd82a1e7d8bb950e97c5e1168b88c3bc1449a94f4f9d99a1f97e3`
`font_01_sfnt_off000064d3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64D3	19476 bytes
SHA-256: `0ea569e2458714af2fc88272f668bb9559ca065cecd410792851a624a05e4648`

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