PDF malware analysis — malicious · 4a5beb16604cda3a

MALICIOUS

PDF

40.9 KB Created: 2021-04-28 08:03:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 1710ac2c9e5178c9d2bc9e709c42adf6 SHA-1: 1ece2825f336da56068bf2bedd1da27cbee03263 SHA-256: 4a5beb16604cda3a07dbf522fd1a6265bd78ae296e755437a231980ff261f184

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and a call-to-action phrase, attempting to trick the user into clicking a link for a 'free generator / game hack'. This link redirects to malicious infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for further malicious actions, such as downloading additional payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9941

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 https://netcdn.xyz/app/431946152/free-robux-no-kind-of-surveys-game-hack In PDF document text
- https://lib.stie-yai.ac.id/repository/roblox-hack-download-2021.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/roblox-fr-extreme-hack.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/hacks-para-roblox-2021-jailbreak-mayo.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/free-robux-human-verification.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/how-to-hack-roblox-with-chrome-extensions.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/roblox-money-cheats-for-tycoons.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/what-happens-when-you-get-hacked-on-roblox.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/roblox-free-gamepass-exploit.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/descargar-hacks-para-roblox-dragon-ball-rage.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/roblox-medieval-warfare-hack.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
`stream_003_off00004318.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4318	25988 bytes
SHA-256: `08c87e242a7153b1f809734ec83d866c74d0b7f4a01a40955d28517649296a5c`
`font_01_sfnt_off00007d4e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7D4E	18600 bytes
SHA-256: `708ba1dad5eca055730b66c2f18fd7beca8b61b965502dfb6f6cbd8bca1a8269`

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