PDF malware analysis — malicious · 8f02ca492425a9d2

MALICIOUS

PDF

49.5 KB Created: 2021-06-03 11:11:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 67029c54f4be235da3132de631959859 SHA-1: f5a75b5e8dcd8569d1e8a1c430c7c26acb928df1 SHA-256: 8f02ca492425a9d299a3a798560634f1f9f4ba7e6d1bf70d924e45dc1552eb20

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 0.9796

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.online/app/431946152/free-robux-group-payouts-game-hack PDF link annotation
- https://ifef.es/ckfinder/userfiles/files/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/free-robux-com-real_GM431946152.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/robux-free-co_GM431946152.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/robux-com-free_GM431946152.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/coin-master-heaven-daily-free-spins-and-coins-links_GM406889139.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/hacker-coin-master_GM406889139.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/roblox-script-hacks_GM431946152.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/free-roblox-generator_GM431946152.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/pubg-uc-2021_GM1330123889.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/www-free-robux-com_GM431946152.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/hack-coin-master-spin_GM406889139.pdfIn PDF document text
- https://ifef.es/ckfinder/userfiles/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005148.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5148	26800 bytes
SHA-256: `383547fe6093e11a4be6c6fc250eb9d78be9261d3b2c0830e27428d52c09cd9b`
`font_01_sfnt_off00008ffa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8FFA	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_02_sfnt_off00009d0c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9D0C	18856 bytes
SHA-256: `ce567b12c15b2d80af346f88522d5e97efe0146d8ef1a381d9680522b282c106`

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