PDF malware analysis — malicious · 197f11f5d99545bd

MALICIOUS

PDF

40.4 KB Created: 2021-04-25 22:10:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 917027d00ce8e612031d85cf6a1361d1 SHA-1: 74b1be4806b6187a0c586e22f7a2f2bd658b31d6 SHA-256: 197f11f5d99545bd1ddba0f9896f7ea803b1fb657a243db2f738528beceef8a3

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as 'game hacks' or 'generators'. The primary malicious URL identified is https://netcdn.xyz/app/431946152/hacking-roblox-account-script-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious redirector designed to lure users to potentially harmful content, likely as part of a phishing or scam campaign.

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/hacking-roblox-account-script-game-hack In PDF document text
- https://lib.stie-yai.ac.id/repository/roblox-bhop-hack.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/how-to-make-a-free-robux-website.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/como-descargar-roblox-hackeado-para-android-2021.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/mode-hacker-roblox.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/hack-t-shirt-roblox.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/how-do-u-become-a-hacker-in-roblox.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/free-promo-codes20219-for-roblox.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/hacking-brothers-roblox-account.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/free-robux-information.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/ads-for-roblox-games-free.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_off000040ff.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x40FF	24680 bytes
SHA-256: `0a2602fb6e5a4f62199aff2f86498a4d1299161e07909bfd55c651621841a0da`
`font_01_sfnt_off000079b8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x79B8	19008 bytes
SHA-256: `0c34d004c1ff8bff0709be1ffc19246f50243e893f91a5b8633628b9ee07560f`

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