PDF malware analysis — malicious · 4631d69beaae7318

MALICIOUS

PDF

39.1 KB Created: 2021-07-06 08:42:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 775a108109e1f261d6c8b0bdf2ebdf5c SHA-1: ab87e247a7a1ec925d3096fa5c43316e1c2e8a8a SHA-256: 4631d69beaae73185ddf3f5607ac766c97bf52adbc1fd4e82ff29714d70d2379

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency and accounts, directing users to a suspicious URL. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the presence of embedded URLs strongly indicate a phishing or scam attempt. Although no scripts were explicitly extracted, the nature of the lure suggests potential for further malicious activity, such as downloading a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9985

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-roblox-accounts-with-robux-that-work-not-banned-2021-game-hack PDF link annotation
- https://www.hearcolors.com.mx/img/blog/files/coin-master-rewards-app_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/hacks-para-roblox_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-robux-adder-apk_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-spin-link-in-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/roblox-how-to-get-free-items-on-roblox-xdaniel_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-to-get-free-robux-no-hacks-2021-in-seconds_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/get-free-robux-proof-2021_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-to-hack-into-games-on-roblox_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-to-get-free-robux-on-laptop-2021_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/tiktok-free-online-games_GM835599320.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/real-free-robux-generator_GM431946152.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_off00003d0a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3D0A	23096 bytes
SHA-256: `c4e28667c27ca25d87b8f77536bf1d95fb1a706754acdac9016d3957366766f6`
`font_01_sfnt_off000070e3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x70E3	20124 bytes
SHA-256: `e8dc8af608a2467c92ba912a1f660b74916591188ffd601a7d8b89018af53e3a`

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