PDF malware analysis — malicious · 3bbd2d16121bf0c2

MALICIOUS

PDF

33.3 KB Created: 2021-07-04 05:23:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 3a19372c16225603d46e10a142ae643d SHA-1: 9a78bf9be0f90a9fb7907d73e29e0371b2e6e5b1 SHA-256: 3bbd2d16121bf0c23c9fd2e35b6292da1898987af53d4fb6872beaf23ce8e1ef

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 0.9824

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/free-robux-glitch-game-hack PDF link annotation
- https://puslitbangperhutani.com/ckfinder/userfiles/files/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/free-minecraft-codes_GM479516143.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/mcpe-master-hack-unlimited-coins-latest-version_GM406889139.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/coin-master-hack-cheat-engine_GM406889139.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/free-spins_GM406889139.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/roblox-svg-free_GM431946152.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/robux-premium_GM431946152.pdfIn PDF document text
- https://puslitbangperhutani.com/ckfinder/userfiles/files/minecraft-xbox-360-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_off00002c51.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2C51	22036 bytes
SHA-256: `4ca284f0f21c468ec885c327405367e3651a648d8b6664e66ecc3cf4e3b69cb5`
`font_01_sfnt_off00005d0e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D0E	19180 bytes
SHA-256: `4a662064efa2bd4954903d0e688b5cea29ffcd4305a5606eea95398cceacf406`

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