PDF malware analysis — malicious · 1fa4635dad216642

MALICIOUS

PDF

35.1 KB Created: 2021-07-09 10:00:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 222b89aedfa69aca07e7625a7e997085 SHA-1: a3e0791026e54452bbc06304f7f3db638970f7fb SHA-256: 1fa4635dad21664283e5f91aaae9aece80ca15b12df9bd9f074a8268c95285b8

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 0.9980

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 http://netcdn.tw/app/431946152/roblox-hacks-2021-game-hack PDF link annotation
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/hack-coin-master-free_GM406889139.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/roblox-free-robux-may-2021_GM431946152.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/free-roblox-wings_GM431946152.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/roblox-asset-download-for-shirt-template-free_GM431946152.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/roblox-girl-avatar_GM431946152.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/pokemon-go-free-raid-pass_GM1094591345.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/minecraft-114-4-download_GM479516143.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/veos-fun-roblox-hack_GM431946152.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/roblox-ingame-item-hack_GM431946152.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/coin-master-daily-link_GM406889139.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
- https://daquagro.id/assets/vendor/ckfinder/userfiles/files/free-robux-promo-codes-february-2021_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_off000031e0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31E0	22576 bytes
SHA-256: `decd385610ccdb876d13c7faf0cd8b0336db6ddffa0da4fbaee81770b6dcea39`
`font_01_sfnt_off000063ec.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63EC	19056 bytes
SHA-256: `a827687bde1c23907f75db23928d8c544c1849638492c2c48bf6e5fa6ea38882`

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