PDF malware analysis — malicious · 5edbf0726dc387bb

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 18:52:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: bac5692c7248e73d991b4a7f242b84ca SHA-1: c03171bf06b2279e1543ac9676aae6d9669cf5b5 SHA-256: 5edbf0726dc387bb7afc434beaff567557b0b096996ef370c2c0dfe32865d4cb

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/free-robux-no-verification-2021-android-game-hack PDF link annotation
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/freerobuxhack-us_GM431946152.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-games-like-coin-master_GM406889139.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/the-plaza-roblox-money-cheat_GM431946152.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-robux-come_GM431946152.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/cheat-codes-mad-city-roblox_GM431946152.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/robux-free-2021_GM431946152.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/code-free-robux_GM431946152.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-robux-offers_GM431946152.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/comment-cheater-sur-roblox-franais_GM431946152.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free_GM406889139.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/safe-free-robux-no-password-or-human-verification_GM431946152.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/dragon-ball-fury-roblox-hacked_GM431946152.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/promo-code-for-pokemon-go-free_GM1094591345.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/coin-master-mod_GM406889139.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-roblox-app_GM431946152.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/microsoft-robux_GM431946152.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
- http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/easy-robux-hack_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_off000030c7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30C7	22364 bytes
SHA-256: `c292d46e7ef4ef3d64fdfcfc05525f2fec1078547b04abf977590d0e1cb28cc6`
`font_01_sfnt_off0000629b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x629B	19648 bytes
SHA-256: `fddc38f60f29949e87a17df7f7945f6cf104ea1bd46a51d994ebbbbf43946b8f`

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