PDF malware analysis — malicious · ee4d25625bcea022

MALICIOUS

PDF

36.2 KB Created: 2021-07-03 15:27:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: e5d9a274285c6e0ae4cb9bcb6d1e9164 SHA-1: 8a6b9629cf1e7454545817ea52e8f0b4bd145dda SHA-256: ee4d25625bcea0223d2207585b810b33cb2a2448a53b117bcd6cbbc3898525a2

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are SEO-optimized and point to files related to game hacks and cheats. The primary URL, http://netcdn.tw/app/406889139/coin-master-hack-apk-35-18-game-hack, suggests a direct download for a malicious application. The presence of a large number of external links and the ML classifier's high confidence score indicate a strong likelihood of malicious intent, likely to distribute malware disguised as game cheats.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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-hack-apk-35-18-game-hack PDF link annotation
- https://dolphintour.vn/images/uploadsfiles/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/roblox-crashes-when-cheat-engine-open_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/roblox-horror-tycoon-hack-script_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-coins-for-coin-master-blogger_GM406889139.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/earn-free-robux_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-robux-human-verification_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/how-to-hack-in-roblox-asasian_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/free-robux-app_GM431946152.pdfIn PDF document text
- https://dolphintour.vn/images/uploadsfiles/how-to-get-minecraft-pe-for-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_off0000356c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x356C	23072 bytes
SHA-256: `59312f2a03fa7b7f8bb68e829f7f587c387c46e00278b9f9ce35fd9e3a9c6d83`
`font_01_sfnt_off0000694e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x694E	18804 bytes
SHA-256: `aac05d6177a90b60b5ec55135024cf4c2d0f170c36ca73a7d8cfbc5a1b3be2be`

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