PDF malware analysis — malicious · f7a2c470668aa6e8

MALICIOUS

PDF

35.5 KB Created: 2021-06-21 14:52:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 3c16f734bb4fb338b7e12b2666ce45f4 SHA-1: dc54672209a4fbf49f0cd9ecc96c23c32bb3e5b7 SHA-256: f7a2c470668aa6e8c139125731c5edf0bfe34cca81be19fc56b9ae98e7b100ea

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document employs a lure of free Robux and game hacks to entice users to click on a malicious URL. The ML classifier strongly indicated maliciousness, and the PDF_GAME_HACK_REDIRECT_LURE heuristic confirms the deceptive nature of the content. While no scripts were explicitly extracted, the embedded URLs suggest a phishing or scamming attempt, likely leading to a further stage of compromise.

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/how-to-get-free-robux-on-roblox-game-hack PDF link annotation
- https://www.hearcolors.com.mx/img/blog/files/bux-gg-robux-free_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/roblox-800-robux-free-gamekit_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/get-free-robux-from-roblox_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-robux-earn_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/tiktok-free-2021-views_GM835599320.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-robux-without-verification-or-survey_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_off00003536.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3536	21896 bytes
SHA-256: `dbd89332066c6ff82f0e9938213ec94aeabae9af1c5dce6ad89d881672a45652`
`font_01_sfnt_off0000658c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x658C	19056 bytes
SHA-256: `22e79bf31db193f266ad8ef0f47d1a9e736b831aec58415b80c9b2f57893c59e`

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