PDF malware analysis — malicious · 375de89fa5699ad8

MALICIOUS

PDF

34.1 KB Created: 2021-06-30 08:46:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 9627c18799f601fff015376b85886f73 SHA-1: aaad3c00f754c1bc580d06b618e306c0f0b95931 SHA-256: 375de89fa5699ad89d0d5a1bc5922c8ac9a91b2209144411c16983deb07dfeca

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, specifically advertising 'game hacks' and 'free robux' to lure users. The primary redirector URL is http://netcdn.co/app/431946152/scriptware-roblox-hack-game-hack, which is flagged as malicious. The document body also contains numerous URLs pointing to similar scam-like content, suggesting a phishing or scam campaign. No scripts were extracted, but the embedded URLs and redirector behavior are strong indicators of malicious intent.

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/scriptware-roblox-hack-game-hack In PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/coin-master-hack-root_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/free-tiktok-views_GM835599320.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/free-robux-alex_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/fb-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/robux-redeem_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/ad-robux-hack_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/robux-hack-tools_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/roblox-tycoon-hack_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/actual-free-robux_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/free-robux-computer-2021_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/free-download-roblox-for-windows-10_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/pubg-uc-image_GM1330123889.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/minecraft-mobile-free_GM479516143.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_off00002d93.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2D93	22328 bytes
SHA-256: `5bd29a2e9da12b18dfbdff091930792324867b8f5b2f563abccd9deadec9e9ad`
`font_01_sfnt_off00005f6f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F6F	19220 bytes
SHA-256: `a79b66d8ed4e6bd0f13e954dd682f9be26872098cf56a01de91d96432afd07b4`

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