PDF malware analysis — malicious · dd85ecfef7d7853c

MALICIOUS

PDF

34.2 KB Created: 2021-06-17 18:05:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 70819a37b93020cd82db4e7a15a908cc SHA-1: 4c31d4e004eb695f8e2f09791f1f0955472c74d2 SHA-256: dd85ecfef7d7853c90f6d7465f61fd3978a083df75571fedf8b8e4a43e7066de

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/roblox-hacks-2021-cheats-explosits-game-hack PDF link annotation
- https://www.skygan.com/uploaded_files/userfiles/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/como-hackear-roblox-com-cheat-engine_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/triangle-head-free-roblox_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/dll-dor-roblox-hacks_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/coin-master-card-hack_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-college-textbooks-tiktok_GM835599320.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-roblox-passwords_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/minecraft-pe_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/cheats-for-city-architect-roblox_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-robux-instantly_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/roblox-builders-club-free_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/coin-master-free-attack_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_off00002f48.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F48	21828 bytes
SHA-256: `bcc16929c5f3549413ed9ea2f19c1435654bbc7434c0aa40d1cb8b3c12c25669`
`font_01_sfnt_off00005f6b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F6B	19440 bytes
SHA-256: `61fcaa69a5ecae28ef56f36d167ea93d77d9e30f33c1644c178d9623c803a04b`

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