PDF malware analysis — malicious · 0ac953b5fcd67895

MALICIOUS

PDF

36.1 KB Created: 2021-07-20 15:02:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 5ff6e63447791a6c5775003ff7ab8f4e SHA-1: 0bef378884e97980bb8d65890a0a1cc7b2983ccc SHA-256: 0ac953b5fcd678956f0e70fb4647606baacfe1ffbc98169b2d07ec5baea04d57

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure. The embedded URL `http://netcdn.tw/app/431946152/free-robux-script-game-hack` likely serves as a redirector to a malicious site or download. While no scripts were explicitly extracted, the nature of the lure suggests a phishing or social engineering attempt to trick users into visiting a compromised URL.

Machine Learning

Nyx PDF Classifier malicious score 0.9251

Heuristics 4

PDF links to a 'free generator / game hack' redirector high 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.
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
External URI info PDF_URI

PDF contains an external URL action
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/free-robux-script-game-hack PDF link annotation
- https://learningmts.pondokyajri.com/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://learningmts.pondokyajri.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
- https://learningmts.pondokyajri.com/__statics/gudangsoal/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- https://learningmts.pondokyajri.com/__statics/gudangsoal/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
- https://learningmts.pondokyajri.com/__statics/gudangsoal/files/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
- https://learningmts.pondokyajri.com/__statics/gudangsoal/files/free-robux-no-download_GM431946152.pdfIn PDF document text
- https://learningmts.pondokyajri.com/__statics/gudangsoal/files/free-minecraft-website_GM479516143.pdfIn PDF document text
- https://learningmts.pondokyajri.com/__statics/gudangsoal/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://learningmts.pondokyajri.com/__statics/gudangsoal/files/robux-hack-me_GM431946152.pdfIn PDF document text
- https://learningmts.pondokyajri.com/__statics/gudangsoal/files/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00002dbd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2DBD	22484 bytes
SHA-256: `16ece5d332d6cd225e5bfbd0faf8f6c187eb6bd79dae392596ca64e2917fcda2`
`font_01_sfnt_off00005fa1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FA1	2920 bytes
SHA-256: `601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7`
`font_02_sfnt_off000069ba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x69BA	18600 bytes
SHA-256: `0da54a24aab33e035f815f2964bc14ed5ce25f178c33b60df2181b46b282b4f0`

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