PDF malware analysis — malicious · f44cf788a18f38f3

MALICIOUS

PDF

42.3 KB Created: 2021-05-13 09:43:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 14546d21d0bf9a5b4c9d25897baaa8d5 SHA-1: e6b5a064a511ea11a01a597f907a44e62bc1dfc6 SHA-256: f44cf788a18f38f38f69c9d93343b77d97c76c03ffe544dd2da9013f6e6334b8

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 0.9971

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/how-to-generate-free-coin-master-spin-game-hack PDF link annotation
- https://www.wco.org.uk/uploads/files/files/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/coin-master-hack-tool-v1-9-download_GM406889139.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/free-robux-cards_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/free-2021-robux_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/how-you-get-robux_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/coin-master-free-link-app_GM406889139.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/coin-master-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/free-outfits-roblox_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_off00004a86.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A86	24936 bytes
SHA-256: `c0217837674201bbbf000a5e1f8a3f1932bd407d99d5b59fe01f8b14759b6f34`
`font_01_sfnt_off000083ed.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83ED	18052 bytes
SHA-256: `bc7397b7892e84f8f438cdf02f94402a75785e8c4a68cee0805b100b0e31cd84`

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