PDF malware analysis — malicious · 4c2ccb2ec7184a91

MALICIOUS

PDF

34.9 KB Created: 2021-06-21 09:20:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 1805e5e996b58dc15159e92c262e56c4 SHA-1: a516bd31ca80b9f79cb4373a12233a404f4b5ab2 SHA-256: 4c2ccb2ec7184a91cd8a840f9958651568dedef6e856437eecf62deb008c4227

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/hack-roblox-robux-2021-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/get-tiktok-followers-free_GM835599320.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
- 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/flying-hacks-for-roblox-survivor_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-free-install_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-hack-como-tener-robux-gratis-2021-nuevo-truco_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-a-lot-of-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/oprewards-com-earn_GM431946152.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/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-the-best-clothes-for-free_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-texture-packs-for-minecraft-pe_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_off00003097.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3097	22380 bytes
SHA-256: `7dec29ef87e2ecc94b58dc65bec76cd7d2338dc32c0b87c9505fbdf5246b0a52`
`font_01_sfnt_off0000629b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x629B	19200 bytes
SHA-256: `cec4b1010b4305759620240e00d80edf8ce1abe0c0f0a9cf9395f2cbcb44103e`

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