PDF malware analysis — malicious · 3eb327e50f954f69

MALICIOUS

PDF

47.2 KB Created: 2021-06-03 09:41:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: b36e3c9b29a0e5f4109402e1f873fad8 SHA-1: d85fac074b586fc19385319917b2831f61c9d5e5 SHA-256: 3eb327e50f954f698ac9704f03172783281ce0f84466a5bfbbe58143ed1bf571

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 0.9832

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/431946152/how-to-get-robux-for-free-2021-game-hack PDF link annotation
- https://dolphintour.vn/images/uploadsfiles/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/roblox-printables-free_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-robux-gift-card_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/roblox-free-item-codes_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/robux-free-2021_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-tiktok-likes_GM835599320.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_off00005150.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5150	29856 bytes
SHA-256: `4d2e8a16b90a7aef7a95285e2a041842bd660ece1168f38da877a1136a2a1028`
`font_01_sfnt_off000094b9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x94B9	18684 bytes
SHA-256: `65f445f0396e54760dd2a1edc1744209422bc48f29c35ea74a9bcb72e79f8b06`

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