PDF malware analysis — malicious · 18e1bb63b239cd5f

MALICIOUS

PDF

35.4 KB Created: 2021-07-04 16:31:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: cf240303bea1426c68ccda49d65d823f SHA-1: 74c1fab591fdcebdd6024d5650c5c230a53a86d5 SHA-256: 18e1bb63b239cd5f3f25b18cf9892c41f0b95d8d9b968be21c411e10d5bc7013

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure related to game hacks and free spins, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the presence of a redirector URL confirms a malicious intent to lead the user to potentially harmful content. The document's content and heuristics suggest it's designed to trick users into visiting a site that likely hosts further malware or phishing attempts.

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/406889139/free-daily-spins-coin-master-2021-game-hack PDF link annotation
- https://tv-transvision.com/ckfinder/userfiles/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/coin-master-reward-link_GM406889139.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/www-roblox-cheatuscom_GM431946152.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/roblox-free-bundles_GM431946152.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/alone-battle-roytale-roblox-hacks-script-copy-aimbot-esp_GM431946152.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/monkey-free-robux_GM431946152.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/coin-master-hack-pc_GM406889139.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/roblox-how-to-get-stuff-for-free_GM431946152.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/free-mermaid-halo-roblox-royale-high_GM431946152.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/robux-apk_GM431946152.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/how-to-get-admin-on-roblox-2021-no-hacks_GM431946152.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
- https://tv-transvision.com/ckfinder/userfiles/files/how-to-get-free-robux-without-email_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
`stream_002_off00003131.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3131	23224 bytes
SHA-256: `f47b581668878db49d368d525742f13a30c578650b5861c86ff6b388ba4a66b5`
`font_01_sfnt_off000065ab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65AB	19000 bytes
SHA-256: `bff5cd883eb4370b15e965f4fd1aca22479e39b86b51e1d2e4068a25e0992d6d`

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