PDF malware analysis — malicious · 8380dd1c4f262839

MALICIOUS

PDF

44.5 KB Created: 2021-06-03 12:24:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 327341e295a18f960bfa7b685baf9bf0 SHA-1: d3e6b6128c6df83aa6cc13a0b8f63c6a8f06777c SHA-256: 8380dd1c4f2628396e71968e09e2475ff3fc26d7f0db5aaf45c98f799876981c

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 0.9865

Heuristics 4

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.
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.online/app/406889139/http-appsmob-info-coin-master-hack-game-hack PDF link annotation
- https://www.insol-europe.org/uploads/files/files/free-minecraft-com_GM479516143.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/www-rbx-com_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-daily-free-spins-today_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/fb-coin-master_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/get-free-robux-today_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-minecraft-hosting_GM479516143.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/robux-offer-wall_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_004_off000050ef.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x50EF	25548 bytes
SHA-256: `9196677f5d9b8f77095b2fe6feecdefda28e9318071d3d07b629f47cdbd79359`
`font_01_sfnt_off00008b2c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B2C	18308 bytes
SHA-256: `0953d93c21b53bfb1f31fa823a9d7d14e5862c498b99c1777eb7f5d92d60cab0`

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