PDF malware analysis — malicious · 9cd7f1b5c262c757

MALICIOUS

PDF

45.1 KB Created: 2021-06-03 09:20:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 3bb8fc654b36d295c1cb94d205cf4bc4 SHA-1: d8208748061693046e0e2c17f16517400b1fac53 SHA-256: 9cd7f1b5c262c75704e8a11641f2396b2c6eb9dc6470f6f88c901859890a6e64

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 0.9865

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-come-game-hack PDF link annotation
- http://windhorsetrek.com/userfiles/files/free-minecraft-client_GM479516143.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/master-coin-hack-app_GM406889139.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/free-gold-cards-coin-master_GM406889139.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/try-coin-master-hack_GM406889139.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/roblox-hack-client_GM431946152.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/get-free-robux-com_GM431946152.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
- http://windhorsetrek.com/userfiles/files/robux-adder_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
`font_00_sfnt_off00004e56.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4E56	27776 bytes
SHA-256: `33a06e1acb8faea10f7d6dfeeaf26d60865ffb527dcdfe280d5df5fa29fb6c20`
`font_01_sfnt_off00008e5a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E5A	18108 bytes
SHA-256: `23b39d788b4f94a358d85c543858153ed4c8a930a2b4b33f7e22821f7bb08b5c`

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