PDF malware analysis — malicious · 5298b4e13dbe802d

MALICIOUS

PDF

47.4 KB Created: 2021-05-20 02:23:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: bc679d7476e78a31db2a9b5bda9a6247 SHA-1: 22c26476f1be148f7b931ccd1386d5e9e20c33a9 SHA-256: 5298b4e13dbe802d864afa0b4a0b1e77e0f991ba6916f88b777354ebfda1f88f

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 0.9977

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/robuxy-com-free-robux-game-hack PDF link annotation
- http://inforplace.com.br/ckfinder/userfiles/files/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/how-to-get-more-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/roblox-exploit-download_GM431946152.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/coin-master-hack-blog_GM406889139.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/free-robux-glitch_GM431946152.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
- http://inforplace.com.br/ckfinder/userfiles/files/free-coin-master-spin-and-coin-link_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_off00004b1b.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B1B	32020 bytes
SHA-256: `aa3c94e93fd1c1cdcce404510fccae1d14e87fb8022dffc65b6a250ecfdf864a`
`font_01_sfnt_off000096f7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x96F7	18452 bytes
SHA-256: `502ad6067225007cfeab5155f8ca615546b56d7ab4478b734f537abd02c25d18`

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