PDF malware analysis — malicious · 4c746f813dca4869

MALICIOUS

PDF

42.5 KB Created: 2021-05-14 07:12:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 813ad20a008c6a5f9ae37ac11b947c86 SHA-1: 48f02e624859c361914cbb57a550eb4367f72bd4 SHA-256: 4c746f813dca48691c2abdefed6a1bc32cfb5d17e4afce277af5ee488e274723

182 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links to websites offering game hacks and generators, a common lure for users to download malicious payloads. The presence of a fake CAPTCHA prompt further suggests an attempt to trick users into executing unwanted actions. While no scripts were directly extracted, the document's structure and embedded URLs strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 7

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.
Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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 https://netcdn.xyz/app/431946152/roblox-script-executor-free-game-hack PDF link annotation
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/earn-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/earn-free-robux_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/how-do-you-get-free-robux_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
`stream_003_off0000493d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x493D	25300 bytes
SHA-256: `53fe3db006db1228c9770b602d4dedde0ecb68d22dd1e275029cdc7fa3cb38d9`
`font_01_sfnt_off00008315.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8315	18488 bytes
SHA-256: `6ea6bb0236530492a5726fbff6dc4038301159956e914e548a210a1fa14d9cf2`

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