PDF malware analysis — malicious · 52af4fa391c3ccc8

MALICIOUS

PDF

36.2 KB Created: 2021-06-28 13:34:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: a44103f2469601eaaae63387e059b5c4 SHA-1: beaae722a161445139e333608ba1d85c986f6078 SHA-256: 52af4fa391c3ccc887f8a594921c8a61ef16341fcfe6c8ef3bec3a1bb4ef0e0d

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, leading to a lure for game hacks and free currency. The document body explicitly mentions 'How To Get Free Robux Without Password' and includes the malicious URL. This suggests a phishing or scam attempt designed to redirect users to potentially harmful websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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
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-without-password-game-hack In PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/get-free-robux-com_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/rbxcity-free-robux_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-real-hack_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-roblox-com_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/forsaken-sword-legacies-2-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/hack-coin-master-apk_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/apk-hack-coin-master_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-hack-without-verification-for-iphone_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/how-to-use-cheat-engine-67-on-roblox-booga-booga_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/play-free-games-online-without-downloading-roblox_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/como-hackear-coin-master-2021_GM406889139.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_off00003414.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3414	22532 bytes
SHA-256: `aa92a300117315478d46f6072c02b9d5d1cbf6cc587a10ff62a04cd69a55fdee`
`font_01_sfnt_off0000665d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x665D	19796 bytes
SHA-256: `5d4dedbb66b5854375c7733634d913e2ef5b4d49a9fd5f97fa20441b87e4b311`

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