PDF malware analysis — malicious · 9bdab87dfe0cb30f

MALICIOUS

PDF

34.6 KB Created: 2021-06-30 11:28:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 4e86bbbc1bd3b9f1ab5d548dd5b6ccf2 SHA-1: ca7815e747d54fc88d901ffbaa2b2e3a735681a9 SHA-256: 9bdab87dfe0cb30fe903b43fbc324a4b9881af28af41ac2e783b721ddd17dbd4

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-do-u-get-free-robux-2021-game-hack PDF link annotation
- https://vieclamjapan.com/upload/files/free-robux-no-verifying_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/roblox-fly-hack-not-a-virus-flood-escape-2_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/free-robux-bc-admin-leaks_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/roblox-hack-android-oyun-club_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/hack-jailbreak-pc-roblox_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/roblox-free-vip-games_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/oprewards-robux_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/500-free-coin-master-spins_GM406889139.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/robuxhub-net_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/play-coin-master-for-free_GM406889139.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/flame-gg-free-robux_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/how-to-get-free-robux-hack-on-iphone_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/collect-free-spin-linms-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_off00002ed5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2ED5	22344 bytes
SHA-256: `03caddadc654cc4a7f125eb21324e33318d4e742dcebdbd9f8cc1df083aab9a1`
`font_01_sfnt_off00006089.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6089	19556 bytes
SHA-256: `ee909949778bcc1eaeaae663f07e5a0770d7aed4eef67476ef7171e54895eba2`

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