PDF malware analysis — malicious · cfe88f07d0cae427

MALICIOUS

PDF

45.8 KB Created: 2021-05-17 07:05:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02

MD5: 9d44110521822f7a92c25639752814cc SHA-1: 552c40cd5d2406e97145a9a652f33b58ba1b3320 SHA-256: cfe88f07d0cae427be3e09b7cfc3997bfb162efdac5b44fa960940b2aed82ca1

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 https://netcdn.xyz/app/431946152/free-robux-no-human-verification-or-survey-or-download-game-hack PDF link annotation
- https://amiranet.com.br/files/files/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
- https://amiranet.com.br/files/files/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
- https://amiranet.com.br/files/files/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
- https://amiranet.com.br/files/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
- https://amiranet.com.br/files/files/hack-avatar_GM431946152.pdfIn PDF document text
- https://amiranet.com.br/files/files/hacks-para-coin-master_GM406889139.pdfIn PDF document text
- https://amiranet.com.br/files/files/free-robux-link_GM431946152.pdfIn PDF document text
- https://amiranet.com.br/files/files/coin-master-free-spins-link-2021-march_GM406889139.pdfIn PDF document text
- https://amiranet.com.br/files/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
- https://amiranet.com.br/files/files/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
- https://amiranet.com.br/files/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
- https://amiranet.com.br/files/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
- https://amiranet.com.br/files/files/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
- https://amiranet.com.br/files/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- https://amiranet.com.br/files/files/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
- https://amiranet.com.br/files/files/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
- https://amiranet.com.br/files/files/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
- https://amiranet.com.br/files/files/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
- https://amiranet.com.br/files/files/coin-master-game-2021-free-spin-link_GM406889139.pdfIn PDF document text
- https://amiranet.com.br/files/files/how-to-hack-mcpe-master-coins_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
`stream_003_off000047ca.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x47CA	30188 bytes
SHA-256: `c494d7ab0f852fd2a43f59f5ce2492f665385aed3ec7e8153cbf2a5bdc4185e0`
`font_01_sfnt_off00008c6a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C6A	19736 bytes
SHA-256: `59e4374f8172b973ba9217c83b5ce6b26483f5ae1ceeffd331798f57e1658bad`

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