PDF malware analysis — malicious · 9b03e70e7f925072

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 17:04:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 7b0454db31d6c51654d7552638f3ee95 SHA-1: 53f20f0e53a34ed5cadc8cfcbe96377258dc496d SHA-256: 9b03e70e7f925072f7387f4949b1b8107c2428d3abdfec594b7d1db58be50ce3

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/479516143/minecraft-complete-handbook-game-hack PDF link annotation
- http://www.nfca.org.tw/upload/files/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/free-robux-2021-download_GM431946152.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/coin-master-hack-ios-download-2021_GM406889139.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/roblox-script-hacks_GM431946152.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/download-hacked-games-coin-master_GM406889139.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/roblox-tablet-hack_GM431946152.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/games-that-gives-free-robux-2021-july_GM431946152.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/roblox-game-pass-hack-2021_GM431946152.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/toolbox-apk_GM479516143.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/how-to-recover-a-hacked-roblox-account-without-email_GM431946152.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/coin-master--hack_GM406889139.pdfIn PDF document text
- http://www.nfca.org.tw/upload/files/coin-master-free-spins-link-today_GM406889139.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_off0000307f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x307F	21868 bytes
SHA-256: `73860d37e513a1e5a9dea3e8e533528ba95d39cc35606eaea4623a4d5f5cb534`
`font_01_sfnt_off00006056.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6056	19008 bytes
SHA-256: `3d4c969307bbdb220863567c701ff0e22ec78a4b6d04f35c3615ddb0a474c515`

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