PDF malware analysis — malicious · 5579e37dd714c54e

MALICIOUS

PDF

34.5 KB Created: 2021-06-20 09:42:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 4755e87a2678910da9fb069bd1f254b8 SHA-1: aa1a854b45330714cfe9525b348d21c4b578432c SHA-256: 5579e37dd714c54ed84ab7f78d64cd3cd168ab28399f0128992084d25ea329b3

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 0.9980

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 http://netcdn.co/app/431946152/roblox-games-stealing-free-models-game-hack PDF link annotation
- https://www.kaojen.com.tw/upload/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/coin-master-hack-injection_GM406889139.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/free-robux-script_GM431946152.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/tests-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/hack-survive-the-diasters-roblox_GM431946152.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/instancevmp-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/free-minecraft-codes_GM479516143.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/descargar-hack-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/how-to-hack-mad-city-roblox-easy_GM431946152.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/hoe-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/roblox-piano-hack_GM431946152.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/hacked-roblox-game_GM431946152.pdfIn PDF document text
- https://www.kaojen.com.tw/upload/files/hackear-coin-master_GM406889139.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_off000030b7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30B7	21752 bytes
SHA-256: `0fe0e0fbd907599e6b25958d5fb71204fe8e616329c908b8df3e380ba7d370d4`
`font_01_sfnt_off00006098.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6098	19504 bytes
SHA-256: `adb84ee69c802684ea0cd1736cd24ef6573513495daf7dffe1b8635f691fae3c`

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