PDF malware analysis — malicious · d8414e8a2f5352da

MALICIOUS

PDF

35.7 KB Created: 2021-06-30 18:52:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: cd11659dd8157f14b9395b0c414726d7 SHA-1: 1ab7912aabffa1165ee1c2c8e6edf46719dd9fa9 SHA-256: d8414e8a2f5352dadac96d8e452516008386549d29b9dd98a09d87e07d7d4391

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.co/app/431946152/roblox-free-hair-boy-game-hack PDF link annotation
- https://www.sun-a.com/ckfinder/userfiles/files/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/coin-master-60-spins_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/how-to-hack-pubg-mobile-uc-without-human-verification_GM1330123889.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/roblox-free-roblox_GM431946152.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/what-is-pubg-uc-carding_GM1330123889.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/coin-master-root-hack_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/redeem-roblox-card-free_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_off00003437.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3437	22724 bytes
SHA-256: `869493bcd0bcbb612443074ffcaf2248d4999de993186daeee8498d404c3a01c`
`font_01_sfnt_off000066ef.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66EF	18952 bytes
SHA-256: `68db533f68a5d85e0c0ba5aa1128411bd5b5e7a97d0d9a36c4d175df7193d229`

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