PDF malware analysis — malicious · d43c65cefe51f26f

MALICIOUS

PDF

34.3 KB Created: 2021-06-24 23:42:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: cfe2511d4a03941b9471682a70f4a916 SHA-1: f634187bafdaaa11e11644ff7388ba7d3717e707 SHA-256: d43c65cefe51f26f19da2f0b56be5213af3be9fdcf25ec60f2fa353a0057580b

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/easy-how-to-get-free-robux-game-hack PDF link annotation
- https://www.advancissurgical.com/uploads/files/files/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/make-free-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-best-free-avatar-iddeas_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/minecraft-free-install_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-hack-with-the-command-prompt-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-promo-codes-2021-not-expired-july_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-robux-generator-app-hacked_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-heaven-links_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-hack-quora_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-real-hack_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_off00002f53.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F53	22204 bytes
SHA-256: `b0ea4d719e2681508d5be8cb6ba162d85f2dc9dc5b4939ccfdeedb629cd7427c`
`font_01_sfnt_off00006075.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6075	19164 bytes
SHA-256: `e4d500aa9da98b19d28a47e4f9041d07d7faef15145a0cabdc472361f1a11a9e`

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