PDF malware analysis — malicious · dfdca78070dc1d68

MALICIOUS

PDF

31.8 KB Created: 2021-07-09 05:02:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 23054d49de8d999c1a2e9d6ab218140f SHA-1: 546198d1e5ce844da4d571ddacdb2d4780f893d1 SHA-256: dfdca78070dc1d68b275b732283e51974757aff22a1319280c3c1932fbf46416

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.tw/app/431946152/roblox-piano-hack-game-hack PDF link annotation
- https://www.bumbar-sport.hr/files/how-to-walk-through-walls-roblox-2021-hack_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/pokemon-go-free-pokeballs-promo-code_GM1094591345.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/minecraft-java-hacks_GM479516143.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/free-robux-com_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/free-coin-master-app_GM406889139.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/robux-hack-generator_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/play-coin-master-for-free_GM406889139.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/is-roblox-hacked_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/free-robux-without-human-verification-for-kids_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/roblox-login-hack_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/phantom-forces-roblox-hack-money_GM431946152.pdfIn PDF document text
- https://www.bumbar-sport.hr/files/my-roblox-avatar_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_off00002b46.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2B46	20628 bytes
SHA-256: `24f41cbfd8875625eb18d4960c1089f392a10154c0a346b2c2dd5b2fff31ae78`
`font_01_sfnt_off00005754.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5754	18932 bytes
SHA-256: `bea12f5c1905fe5d1ca5acd369b45985eddae9fbbbe34fc32947a46404ebe472`

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