PDF malware analysis — malicious · 5b4e4db0a1f1f5da

MALICIOUS

PDF

42.6 KB Created: 2021-05-20 03:08:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: b42f0e600eb2283e75d4b50f414c3463 SHA-1: ca20d223ca495e1ca2b31c0eea53ca3a869c9fed SHA-256: 5b4e4db0a1f1f5da33cad6f3f10cb71bd4762425c345f7566cb4da9e36a67156

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to websites offering "free generators" and "game hacks," a common lure for malware distribution. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to trick users into downloading potentially harmful software.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/free-mod-apk-coin-master-game-hack PDF link annotation
- http://prazdnik-kzn.ru/images/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/minecraft-realms-free_GM479516143.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/free-unlimited-robux_GM431946152.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/coin-master-fb-free-spins-link_GM406889139.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/united-gaming-net-coin-master-hack_GM406889139.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/hack-coin-master-free_GM406889139.pdfIn PDF document text
- http://prazdnik-kzn.ru/images/minecraft-pe-hacks_GM479516143.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_off00004b92.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B92	24700 bytes
SHA-256: `c8bc5672bec500da779620606f3a95a7b2e294ff7bc1de4f8df154ba40a016b1`
`font_01_sfnt_off00008452.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8452	18228 bytes
SHA-256: `94a160b3eebda81a774dce60345efae5de7f6df629fda5b11a26048b94d99866`

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