PDF malware analysis — malicious · cb30ea13145cb128

MALICIOUS

PDF

48.6 KB Created: 2021-06-03 10:07:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 2572c804668acd50a92072b075407f7f SHA-1: 2f46e6619a150db4cec2f012f87045fb3ef252f7 SHA-256: cb30ea13145cb128a0d149409d235da8b842960b0b0b8b17f1a864909a3d2a4d

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/robux-free-robux-game-hack PDF link annotation
- http://www.inoxograde.hr/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/earn-robux-today_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/minecraft-mod-updater_GM479516143.pdfIn PDF document text
- http://www.inoxograde.hr/files/roblox-game-free-download_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/free-robux-cards_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
- http://www.inoxograde.hr/files/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/minecraft-build-hacks_GM479516143.pdfIn PDF document text
- http://www.inoxograde.hr/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/pokemon-go-free-coins-ios_GM1094591345.pdfIn PDF document text
- http://www.inoxograde.hr/files/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
- http://www.inoxograde.hr/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- http://www.inoxograde.hr/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
- http://www.inoxograde.hr/files/roblox-prison-life-hack_GM431946152.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_off00005063.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5063	29844 bytes
SHA-256: `cd132262a004949d301fff2c1e796ff647fe7370b757a473ec83dd97e39b2323`
`font_01_sfnt_off00009218.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9218	2940 bytes
SHA-256: `eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a`
`font_02_sfnt_off00009c27.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9C27	18012 bytes
SHA-256: `3f1ded8a9c51e4f0f41c660fd84d3573ebe8f92a83837bcaa523a9614d650e73`

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