PDF malware analysis — malicious · 9d9fd534cfba810f

MALICIOUS

PDF

33.3 KB Created: 2021-07-23 17:55:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 61d9739839c5816081fb84f398c84aa3 SHA-1: 409155f730d2105be346543e3bfa0e6f10fba8ad SHA-256: 9d9fd534cfba810fd959191e01314ef24015105c35a9552b2dbc5622e97a16c7

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a lure for 'free Robux' and game hacks, directing users to a suspicious URL. The document body and heuristics indicate a phishing or scam attempt, likely to redirect users to a malicious site or download further malware. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9942

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/431946152/free-robux-no-verification-or-survey-game-hack PDF link annotation
- https://mountainholidaytreks.com/userfiles/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
- https://mountainholidaytreks.com/userfiles/files/roblox-apocalypse-rising-hack_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
`font_00_sfnt_off000029d5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x29D5	22956 bytes
SHA-256: `0ff2f015b173198a07fdaaf523ad38fa0d6824b9fc5d263d0636a17047ea8d2b`
`font_01_sfnt_off00005d7a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D7A	19080 bytes
SHA-256: `639f8102a1b831e35f5cb6da0b764cfab857c828cdece95449e85bc92486dc91`

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