PDF malware analysis — malicious · 623a8277d9b1bfbb

MALICIOUS

PDF

43.2 KB Created: 2021-05-13 00:11:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 263b7372d7482fdbdfd8410a4a789f19 SHA-1: 23b074b90843c88903b2ee9272228b72d53ec3b7 SHA-256: 623a8277d9b1bfbbf4bd8617912478b23cb6b1e99b6476f4e0d01a22439549ed

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 0.9969

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/479516143/minecraft-realms-free-codes-game-hack PDF link annotation
- https://www.failtesolar.com/uploaded_files/userfiles/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/robux-link_GM431946152.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/free-vip-roblox_GM431946152.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/free-robux-instantly_GM431946152.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/roblox-c9m_GM431946152.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/robux-website_GM431946152.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/roblox-com-robux_GM431946152.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/rbxdemon_GM431946152.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
- https://www.failtesolar.com/uploaded_files/userfiles/files/coin-master-hack-2021_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
`stream_003_off00004c56.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C56	25504 bytes
SHA-256: `ed3b1c8cf0a8ae07b8c70a447d7b8fb4e6fceca9c6f8aed321c3ec7ea732fb1e`
`font_01_sfnt_off000086f3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86F3	18216 bytes
SHA-256: `30a8f83054e231b1bb485b1ca025b33fda8ee43bcea67b958af1de796f39c45f`

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