PDF malware analysis — malicious · 85bd1c69f7e30de4

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 13:23:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 1cadb06c54ec7cc6d665406a1d7413bd SHA-1: b54796fc04378d4f358a98589a58e6f57be58b48 SHA-256: 85bd1c69f7e30de481b8cdfaa557c3b380b8ade02b6fe6015fc719c4e7da680a

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) 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.
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/coin-master-32-mod-hack-unlimited-game-hack PDF link annotation
- https://mountainholidaytreks.com/userfiles/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/how-to-hack-coin-master-game-2021_GM406889139.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/free-minecraft-server_GM479516143.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/free-100-robux_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/coin-master-heaven_GM406889139.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/get-free-robux-today_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/best-roblox-hacker-names_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/free-robux-scam_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/hack-coin-master-mod-apk_GM406889139.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/irobux-com-redeem_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/roblox-free-followers_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/roblox-apocalypse-rising-hack-dll_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/minecraft-windows-10-edition-unlock-full-game-free_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_off00002fbb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FBB	22176 bytes
SHA-256: `c5d8ed46c9732fc1ee849610248a7dd2962af65389b6c02fe678113c8d4992a8`
`font_01_sfnt_off000060f5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60F5	18996 bytes
SHA-256: `37ed63e74a535a76445230d9c7f377bd7b9b2eaccd5f624491c1f2f15b22ef77`

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