PDF malware analysis — malicious · 3dd8e682f798b8d5

MALICIOUS

PDF

36.3 KB Created: 2021-06-29 12:00:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 6f4928a69bdb0d3ab0c7ced835d08ebd SHA-1: 756f378339e23e98b94702ed527f46d97fe1b7f3 SHA-256: 3dd8e682f798b8d53dcde4bb613d1aa6bc061d6cebf4977996acddc5438b15fe

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free game hacks' for popular games like Roblox and Coin Master. The document body and embedded links strongly suggest a phishing or scam attempt designed to lure users to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative 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/broward-county-roblox-free-game-hack In PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/coin-master-game-hacking_GM406889139.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/free-robux-app-2021_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/but-link-says-free-robux-walter_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/how-to-hack-roblox-for-robux-2021_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/hacker-coin-master_GM406889139.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/robux-hack-tools_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/roblox-jump-hack-2021_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/free-cloth-in-roblox_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/free-unlimited-robux-generator_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/roblox-rs16-5-hacks_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/roblox-system_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/roblox-games-for-free-please_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/synapse-roblox-download-free-2021_GM431946152.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
- http://www.lorengntb.com/new/public/ckfinder/userfiles/files/robux-hack-xonnek_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_off000034c1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x34C1	22800 bytes
SHA-256: `c6361139237ca0c43c57f10c9f5ea2beefb650cf7a70209ad5a5f32f39630b4f`
`font_01_sfnt_off000067b0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67B0	19412 bytes
SHA-256: `478356b02a83261c08fe24600a52b37a1af645cadf4e588e4bb05535b7e08ce3`

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