PDF malware analysis — malicious · 3aff2b1dcd572c18

MALICIOUS

PDF

34.1 KB Created: 2021-06-18 01:13:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22

MD5: 923096d171b960e5665ee00c5959c7a9 SHA-1: bbc45936e8e3c3656dca7a3c87effd3190a2341a SHA-256: 3aff2b1dcd572c182e79be66eec3663d0f2ff5d30c067283db14a92796ca5e1a

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/431946152/1-million-free-robux-landonrb-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/how-to-hack-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/new-roblox-swordburst-2-hack_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-avatar-free_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/www-coin-master-hack_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hack-coin-master-apk_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-fire-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-tiktok-bots_GM835599320.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/earn-robux-today_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-make-free-robux_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
`font_00_sfnt_off00002eca.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2ECA	22172 bytes
SHA-256: `08c346c0fa8bdca1670e1d6468b8e74888e0b097c3a369379a2236ce410cd429`
`font_01_sfnt_off00005fdf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FDF	19200 bytes
SHA-256: `74c9cf9984315f5783a21d23729bc289ab5eb6986e8dc1f94a96f7873c2c9bb3`

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