PDF malware analysis — malicious · 730344213a4ca98a

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 01:43:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 10da02d1c7326d8d1e031acfc12a241e SHA-1: f8c42091f4f9d856cdd387bd6959286957e984f6 SHA-256: 730344213a4ca98a4dca9446de876fc15374b2a5b3e41246f29f566ed3adeb9a

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free currency, directing users to external URLs like http://netcdn.tw/app/406889139/how-to-get-free-spins-on-coin-master-game-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest a phishing or social engineering attack aimed at redirecting users to potentially malicious sites. The ML classifier strongly flagged this PDF as malicious.

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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/406889139/how-to-get-free-spins-on-coin-master-game-game-hack PDF link annotation
- https://www.wholesomeliving.in/uploaded_files/userfiles/files/free-robux-exe_GM431946152.pdfIn PDF document text
- https://www.wholesomeliving.in/uploaded_files/userfiles/files/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
- https://www.wholesomeliving.in/uploaded_files/userfiles/files/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
- https://www.wholesomeliving.in/uploaded_files/userfiles/files/roblox-cheat-codes-2021_GM431946152.pdfIn PDF document text
- http://www.wholesomeliving.in/uploaded_files/userfiles/files/free-robux-hack-on-ipad_GM431946152.pdfIn PDF document text
- https://www.wholesomeliving.in/uploaded_files/userfiles/files/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
- http://www.wholesomeliving.in/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
- http://www.wholesomeliving.in/uploaded_files/userfiles/files/coin-master-free-spins-link-june-2021_GM406889139.pdfIn PDF document text
- https://www.wholesomeliving.in/uploaded_files/userfiles/files/roblox-restaurant-tycoon-cheat-engine_GM431946152.pdfIn PDF document text
- https://www.wholesomeliving.in/uploaded_files/userfiles/files/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
- http://www.wholesomeliving.in/uploaded_files/userfiles/files/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
- https://www.wholesomeliving.in/uploaded_files/userfiles/files/can-u-get-robux-for-free_GM431946152.pdfIn PDF document text
- http://www.wholesomeliving.in/uploaded_files/userfiles/files/coin-master-daily-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
- https://www.wholesomeliving.in/uploaded_files/userfiles/files/how-to-hack-roblox-account-on-phone_GM431946152.pdfIn PDF document text
- http://www.wholesomeliving.in/uploaded_files/userfiles/files/minecraft-mac-free_GM479516143.pdfIn PDF document text
- http://www.wholesomeliving.in/uploaded_files/userfiles/files/how-to-trade-for-free-on-roblox_GM431946152.pdfIn PDF document text
- https://www.wholesomeliving.in/uploaded_files/userfiles/files/how-to-buy-free-robux-2021_GM431946152.pdfIn PDF document text
- http://www.wholesomeliving.in/uploaded_files/userfiles/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
- https://www.wholesomeliving.in/uploaded_files/userfiles/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.wholesomeliving.in/uploaded_files/userfiles/files/minecraft-cheats-pc-2021_GM479516143.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_off0000313e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x313E	22876 bytes
SHA-256: `1cb22c6d560b5faafb42e9f6784045ddf94f1b60e00d8d014670dea7a322f841`
`font_01_sfnt_off0000645e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x645E	18600 bytes
SHA-256: `b875b2547fdd86b5ddfc4bd9990df968a5fdc089a690d798ffa545ad033f7ff5`

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