PDF malware analysis — malicious · be1c848e0028194d

MALICIOUS

PDF

35.7 KB Created: 2021-06-21 08:00:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22

MD5: f563c7084c68ce6faa322776b7425a71 SHA-1: 4bc86e4dcd40d1616758fde4dec7f68f3ed43eb8 SHA-256: be1c848e0028194dcc95287dbc0c4f3e93d7496f0083f7d83dbe8e32a6b695b7

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/how-to-get-free-robux-without-personal-info-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/pastebin-robux-free_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-no-verification-2021_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hack-coin-master-ios_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-gfames-that-dont-take-password_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-much-robux-can-you-get-with-1-million-dollars_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-cheat-at-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/get-free-robux-info_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-accessories-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/pubg-uc-no-verification_GM1330123889.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/gamekit-didnt-give-me-free-800-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-free-spins-hack-but-no-surveys_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_off000032dd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x32DD	22388 bytes
SHA-256: `367ad4b6b7f098602195f903b0572fe73376516b0b78fa4d9b811eea2666cedc`
`font_01_sfnt_off000064cc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64CC	19696 bytes
SHA-256: `e74d5e8c2a5de8d854b319449d03680e041b47a7808a418e65d6e129d1f43171`

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