PDF malware analysis — malicious · 82c7c656284e925c

MALICIOUS

PDF

34.2 KB Created: 2021-07-19 14:50:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 1f10409a17356493a0f4ff6aae182717 SHA-1: 66794e2a5604c6232d5da55ecbb13192b468b2b1 SHA-256: 82c7c656284e925c14b15cb3c2ea705aab4a65858aed39a48ba87c38a1aa66f7

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document employs a common lure of 'free game hacks' and 'free followers' to entice users into clicking embedded links. The primary link, http://netcdn.tw/app/835599320/free-tiktok-followers-game-hack, is identified as a redirector, likely leading to malicious sites or further phishing content. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit vulnerabilities or deliver a secondary payload, aligning with client execution techniques.

Machine Learning

Nyx PDF Classifier malicious score 0.9955

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/835599320/free-tiktok-followers-game-hack PDF link annotation
- https://www.vizyonproduction.com/application/uploads/assets/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/freer-pro-tiktok_GM835599320.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/how-can-you-get-free-robux_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
`font_00_sfnt_off000033a4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x33A4	22436 bytes
SHA-256: `608f240f89a162576a435585cf3da019587a22d96cae0e140ba108ca54b3d916`
`font_01_sfnt_off00006587.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6587	17692 bytes
SHA-256: `ba2215a0f2290c6faad19fe6968ba231152e54b1cb241ca137cf69db350684c8`

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