PDF malware analysis — malicious · c9bef2caa8eda94e

MALICIOUS

PDF

41.5 KB Created: 2021-04-30 14:29:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: b1aacc498e1f77636361e7bdf93f38fe SHA-1: e094ab3baefb95294eaa8288b470e19366cfada4 SHA-256: c9bef2caa8eda94ed6e2d75d966c616a37a6d7ae66760a484d6f8813251cef59

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirectors and other PDF files, all related to game hacks and free in-game currency, indicating a phishing or scam attempt. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks. While no scripts were explicitly extracted, the nature of the links suggests a potential for further malicious activity, 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/games-in-roblox-with-free-radio-game-hack In PDF document text
- https://lib-stie.yai.ac.id/repository/roblox-prison-life-noclip-hack-2021.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/piano-cheating-hack-roblox.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/medkit-free-robux-get.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/free-robux-generator-gg.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/friendly-face-free-robloxpgn.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/5-robux-for-free.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/how-to-get-free-money-roblox-vehicle-simulator.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/roblox-how-to-hack-any-tycoon.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/free-robux-no-taks.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/kron-hack-for-roblox.pdfIn PDF document text
- https://freerobux.cyouIn 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_off00004157.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4157	26644 bytes
SHA-256: `fe72c129a86f66e91ab9757311bcd6eb9572edd798657f5239920a239e648776`
`font_01_sfnt_off00007db3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7DB3	19200 bytes
SHA-256: `ee04c75b0b25a78e99424d19179d4a0544cdd8e1dd61dd90d8924b2e43ad4d2c`

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