PDF malware analysis — malicious · 314281cf2876df6d

MALICIOUS

PDF

35.2 KB Created: 2021-07-07 05:03:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: f6397ad8d45a6e6b671cdf9fef59d647 SHA-1: 531842fa65b880f9f0f18bbb6eb27ed65112b458 SHA-256: 314281cf2876df6d603a1002cf62d1f31ec1be94b4aacb9405796c0fa44abd9b

168 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF contains embedded JavaScript and links to known malicious redirector infrastructure, specifically advertising 'free Robux' or game hacks. The primary malicious URL identified is http://netcdn.tw/app/431946152/who-to-get-free-robux-game-hack. The embedded JavaScript likely facilitates the redirection or exploitation process, leading to a potential client-side exploit or further payload download.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 5

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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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.tw/app/431946152/who-to-get-free-robux-game-hack In PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/roblox-island-royale-hack-2021_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/admin-command-roblox-hack_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/roblox-party-printables-free_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/cheat-roblox-csgo_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/free-robux-si_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/roblox-cheat-engine-tutorial_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/how-to-hack-the-robux_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/rewards-robux_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/robux-free-c_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/rape-simulator_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/jeux-de-free-roblox_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/roblox-free-followers_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/how-to-get-400-robux-on-roblox-for-free-2021_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_off0000323e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x323E	22372 bytes
SHA-256: `23ede2536a4b46e3bfaeb1edc0d3fded63351a406bdd20291ef127a887fa93d0`
`font_01_sfnt_off00006431.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6431	19184 bytes
SHA-256: `8d240f683c5a5d51cb605f4b06df9d271b22e3bf7dc4e657cba8cc5b4ea7a16b`

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