PDF malware analysis — malicious · 16f71cef9a486c77

MALICIOUS

PDF

35.7 KB Created: 2021-06-21 22:49:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: fd41c983973046b0d025e82f1e204daf SHA-1: 13c8eef4aa5a42244a19d32b5ede6d26fb627804 SHA-256: 16f71cef9a486c776b687dff62b2f1e704f5e41dd91cfd4d76558775e6e827e9

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-hack-tool-robux-game-hack PDF link annotation
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/gamekit-free-800-robux_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/earn-robux-online-hack_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/noclip-roblox-cheat-engine-2021_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/near-tiktok-free-account_GM835599320.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/roblox-hack-ninja-legends_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-minecraft-client_GM479516143.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/reach-hack-roblox_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-minecraft-printables_GM479516143.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-codes-that-haven-t-been-used_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/minecraft-java-edition-download-free_GM479516143.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_off0000341f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x341F	22588 bytes
SHA-256: `c5d64d956ce97329878f427132db68343789461d33093cab71317fbd8cc8675d`
`font_01_sfnt_off000066cb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66CB	18960 bytes
SHA-256: `89b9cf33107575d33c18656ad2f006e30ff765e111a0b709f3392d3c99865fda`

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