PDF malware analysis — malicious · 23d200e75697edcc

MALICIOUS

PDF

44.1 KB Created: 2021-05-11 16:03:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02

MD5: 789bea308f79f4d0cbe2cc98f264854f SHA-1: 8d6600f1c8ccc63a85dd32537dd11766755983f2 SHA-256: 23d200e75697edccc8a49d58e22fae3b682bae4d623587b15b0921e20d713bfb

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 0.9976

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/coin-master-hack-pro-gamers-game-hack PDF link annotation
- http://www.chitfund.com/uploaded_files/userfiles/files/minecraft-app-free-download_GM479516143.pdfIn PDF document text
- https://chitfund.com/uploaded_files/userfiles/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
- http://www.chitfund.com/uploaded_files/userfiles/files/robux-free-online_GM431946152.pdfIn PDF document text
- http://www.chitfund.com/uploaded_files/userfiles/files/coin-master-event-hack_GM406889139.pdfIn PDF document text
- https://chitfund.com/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
- http://www.chitfund.com/uploaded_files/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- http://www.chitfund.com/uploaded_files/userfiles/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
- https://chitfund.com/uploaded_files/userfiles/files/robux-money_GM431946152.pdfIn PDF document text
- https://chitfund.com/uploaded_files/userfiles/files/coin-master-hack-cheat-engine_GM406889139.pdfIn PDF document text
- http://www.chitfund.com/uploaded_files/userfiles/files/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
- https://chitfund.com/uploaded_files/userfiles/files/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://chitfund.com/uploaded_files/userfiles/files/roblox-com-hack_GM431946152.pdfIn PDF document text
- https://chitfund.com/uploaded_files/userfiles/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
- http://www.chitfund.com/uploaded_files/userfiles/files/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
- http://www.chitfund.com/uploaded_files/userfiles/files/minecraft-free-trial_GM479516143.pdfIn PDF document text
- http://www.chitfund.com/uploaded_files/userfiles/files/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
- http://www.chitfund.com/uploaded_files/userfiles/files/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
- http://www.chitfund.com/uploaded_files/userfiles/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
- https://chitfund.com/uploaded_files/userfiles/files/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
- https://chitfund.com/uploaded_files/userfiles/files/apps-that-give-you-free-robux_GM431946152.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_off00004fd9.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4FD9	25272 bytes
SHA-256: `a690b5ecacb7c8d7b40a8515287e0f63222dc08874cbe64315ebc676c66afaf6`
`font_01_sfnt_off00008acf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8ACF	18132 bytes
SHA-256: `7c3ba000fcc9e82367a9cf09e7428e48624a936725f215f3086fe1b405a0b7f2`

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