PDF malware analysis — malicious · 3c7ea2a70a839875

MALICIOUS

PDF

45.2 KB Created: 2021-05-16 22:13:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: c7cc01410ed0765d51d17b3ea12f4e40 SHA-1: ba130e2d429787038ab98136f3d64287efe84799 SHA-256: 3c7ea2a70a839875644fee9ab6757a508bc4507c94fbf0f292da2b8490bc7d71

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a remote-support lure. 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 5

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.
Remote-support tool lure high SE_REMOTE_SUPPORT_LURE

Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
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-pocket-edition-mods-for-free-game-hack PDF link annotation
- https://www.jjautomation.in/uploaded_files/userfiles/files/how-do-i-get-robux_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/free-roblox-adopt-me-pets_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/vip-roblox-free_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/spin-coin_GM406889139.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/coin-master-village-4_GM406889139.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/free-spins-coin-master-march-2021_GM406889139.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/coin-master-free-spins-ios-app_GM406889139.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/free-roblox-templates_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/robux-game_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/coin-master-free-redeem-code_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_off00004c31.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C31	29600 bytes
SHA-256: `3b8840e9d420c6e4d3138c175c1c3dd4ead15e35696d8c8c91d55767597066f6`
`font_01_sfnt_off00008ecf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8ECF	18208 bytes
SHA-256: `52725ebef45a42bab5f52f4296d4c65b292dd882fbab5616e23215bf8ac92a4c`

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