PDF malware analysis — malicious · cb8a1910d84208d5

MALICIOUS

PDF

35.2 KB Created: 2021-07-09 09:29:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: eba7693da65841441393db61e13b2961 SHA-1: 11914ca51c56003d6ec58396e832d46701299ee9 SHA-256: cb8a1910d84208d5faf6488aa17a5cd1bc8dcca9bc42218f178c8d0cd03734ea

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-without-offers-game-hack PDF link annotation
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/hacks-para-roblox_GM431946152.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/roblox-free-airport_GM431946152.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/tiktok-free-like-website_GM835599320.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/hack-coin-master-free_GM406889139.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/minecraft-pe-free_GM479516143.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
- https://terapivitalitasjogja.com/ckfinder/userfiles/files/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
- https://www.roblox.com/my/tasksIn 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_off000030cb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30CB	22756 bytes
SHA-256: `c0e775543dec3222dfc97b6468fe5399659cf3691d282cda27e2a4e1219064ce`
`font_01_sfnt_off000063e9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63E9	19304 bytes
SHA-256: `d28279064c80375efd82c55b38a8139998c8ec291e9a82c1a232f0005e70f64e`

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