PDF malware analysis — malicious · 71ab8d7eadabbecd

MALICIOUS

PDF

36.0 KB Created: 2021-06-24 19:00:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: c405fde020fca127183e0fd30fa9b723 SHA-1: 8bda65aafbbd66cf1f9dd3625799cc51ac8f7c76 SHA-256: 71ab8d7eadabbecde036e24efaa64c3dd888f97238a555045aacbcfe2e89a60c

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/free-robux-no-human-verification-or-survey-or-download-2021-game-hack PDF link annotation
- https://www.advancissurgical.com/uploads/files/files/free-roblox-executor_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/robux-command-hack_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/www-free-robux-com_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/hack-na-robux-bez-podawania-numeru-telefonu_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-website_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-free-link-facebook_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-hack-tool_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
`font_00_sfnt_off000031b1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31B1	22216 bytes
SHA-256: `cfff3389cc7bacea3d03c0a1bd74597f5a5ab8ba08d2d00dd392b3dde759f8b2`
`font_01_sfnt_off00006321.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6321	20608 bytes
SHA-256: `84e083980845d6db402b7178d67bc98d29f4cdbc71d93f4e93f474fc98f39a9a`

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