PDF malware analysis — malicious · 15eb920aefcb9f1c

MALICIOUS

PDF

33.5 KB Created: 2021-07-07 04:46:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 6a0b430709ff33776e266363f27cf4ba SHA-1: 1b129e86268bade00da76bd6f11681776e9bb868 SHA-256: 15eb920aefcb9f1cc129477fea0c4ea077b01741514c8b10c590335224bf3de1

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/how-to-hack-stats-in-roblox-game-hack PDF link annotation
- https://bookswithapast.com/ckfinder/userfiles/files/minecraft-mojang-free_GM479516143.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/bux-free-robux_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/roblox-robux-promo-code-hack_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/http-blackgamesus-coinmasterhack_GM406889139.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/free-roblox-hack-download-2021_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/buzz-free-robux_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/how-to-get-a-free-boombox-on-roblox-high-school_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/roblox-robux-hack-february-2021-pastebin_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/coin-master-link-today_GM406889139.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/free-robux-not-fake_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/poppy-roblox-tshirt-free_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/hacks-game-in-roblox-prison-life_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/free-robux-no-human-verification-2021-working_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/free-plain-white-shirts-on-roblox_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
- https://bookswithapast.com/ckfinder/userfiles/files/roblox-promocodes-hacks-pastebin_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_off00002b9a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2B9A	22896 bytes
SHA-256: `3f185a56019eebbe1a8c69ed6b5a8eaf1b75de58426322b473c11236ae1ca1c8`
`font_01_sfnt_off00005ef2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5EF2	18736 bytes
SHA-256: `9ee4f5c63ed68d1ffb6fbbe992d408780fe40c2cb7e17c7ed48a0e2f72dcac78`

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