PDF malware analysis — malicious · 3052237dba157de6

MALICIOUS

PDF

34.5 KB Created: 2021-07-20 02:32:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: e138b70b75105033e13731d129133854 SHA-1: e448d9f452122536dfc2838d3e48ae4d94a5b318 SHA-256: 3052237dba157de6c37433d771c26ad7944b1c8a434b88209f8a12f07c0cd43b

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' lure. The embedded URL http://netcdn.tw/app/406889139/claim-free-spins-coin-master-game-hack is the primary indicator of malicious intent, likely serving as a redirector to a phishing or malware distribution site. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.9955

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/406889139/claim-free-spins-coin-master-game-hack PDF link annotation
- http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/free-disney-plus-accounts-tiktok_GM835599320.pdfIn PDF document text
- http://smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
- http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
- http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
- http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
- http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
- http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/www-free-robux_GM431946152.pdfIn PDF document text
- http://smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
- http://www.smkn1kutaselatan.sch.id/new/public/ckfinder/userfiles/files/minecraft-education-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
`stream_002_off0000306f.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x306F	23332 bytes
SHA-256: `f14df9eb4ab5d87410a5385d45f5e3cac8a95cdfaf26f5688e173fc4ede5df36`
`font_01_sfnt_off0000654e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x654E	18220 bytes
SHA-256: `a27868aca9095d1db43e3a34661a683bdd93dcaecb4c52cce590f5e85fca806a`

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