PDF malware analysis — malicious · 50f190242f37b410

MALICIOUS

PDF

38.7 KB Created: 2021-06-18 17:11:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 60e52ec93fb746c2c602b636773fcef0 SHA-1: af739a256fcaa1f325cf1c6ac0e185c73ccbfcb6 SHA-256: 50f190242f37b410166c5cb1ec319bcb2e0a3050efdfa45e5844286735d0ee24

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a game hack generator, which is a common lure for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a potentially harmful site.

Machine Learning

Nyx PDF Classifier malicious score 0.9985

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.co/app/431946152/camping-2-hacks-roblox-game-hack PDF link annotation
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-minecraft-coins_GM479516143.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-robux-generator_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/coin-master-hack-generator_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/coinmaster-hack_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/coin-master-game-hack-kaise-kare_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/fbchampion_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-roblox-gear_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/how-much-robux-can-you-get-with-1-million-dollars_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/how-to-hack-roblox-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/robux-hack-generator_GM431946152.pdfIn PDF document text
- https://www.roblox.com/.IIn 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_off00003e9d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3E9D	22860 bytes
SHA-256: `6910508fbd302683c59fc849fb720bf4aca5b8ce22483cdb1057c4e42e1e62ee`
`font_01_sfnt_off000071af.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x71AF	19336 bytes
SHA-256: `a40ecaebe8995b679a0c39b43b6177b7be9fc449d336f0cd1db3efaa44ee7736`

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