PDF malware analysis — malicious · 8a3ec9f8b7ecd3a1

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 15:43:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 5155dd38536c591174ca01108de555d3 SHA-1: 4c5dcdf0522f5106277ed750e08a2ac8a8c153ff SHA-256: 8a3ec9f8b7ecd3a135d70f0ca2220e2c43bd9a851c9a8565ae993a3209b8d92c

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.tw/app/431946152/how-to-get-free-robux-hack-game-hack PDF link annotation
- https://sensorcamera-tw.com/upload/files/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/free-minecraft-java-account_GM479516143.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/oginject-co_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/free-robux-master_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/free-roblox-gear-2021_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/cheat-engine-64-roblox-jailbreak_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/robux-hack-tools_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/earn-free-robux-com_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/free-glasses-roblox_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/what-is-the-code-for-free-robux_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/apk-robux-hack_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/free-face-roblox-face-anime-girl_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/game-give-free-robux_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/free-spin-and-coin_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/minecraft-bedrock-free-download_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_off00002da0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2DA0	23000 bytes
SHA-256: `516b15ea9ff49a6f18b2f2fc1f23e09864db07189b67c60d6731e34b0bd6070f`
`font_01_sfnt_off00006111.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6111	19152 bytes
SHA-256: `a9bff55de90b7722e0be476df1c7a65da1171d9638b3b21a902752e59eae7e63`

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