PDF malware analysis — malicious · 467b2f5724d3efb8

MALICIOUS

PDF

41.2 KB Created: 2021-04-25 07:49:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 97c9f1d591e9960683428446a2eec8d5 SHA-1: 0279417a203df8f213c284992d2b4b18d4c5fe18 SHA-256: 467b2f5724d3efb810554792174f75582b906ea66034388eed5eed92108834a7

90 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a lure for free game hacks, linking to a suspicious URL. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9941

Heuristics 5

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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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 https://netcdn.xyz/app/431946152/roblox-minecraft-game-free-game-hack PDF link annotation
- http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-2021-legit-working-100.pdfIn PDF document text
- http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-for-kids-under-12.pdfIn PDF document text
- http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/a-lot-of-free-robux.pdfIn PDF document text
- http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/robux-hacks-that-acctualuy-work-for-everyone-on-roblox.pdfIn PDF document text
- http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/roblox-claim-free-robux.pdfIn PDF document text
- http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/roblox-cheat-engine-how-to-get-btools.pdfIn PDF document text
- http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-on-phone-no-verification.pdfIn PDF document text
- http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/roblox-blox-pice-hacks.pdfIn PDF document text
- http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/comment-hacker-mad-city-roblox.pdfIn PDF document text
- http://kpu-klungkungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-roblox-items-2021.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_off00004265.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4265	25880 bytes
SHA-256: `80004328cac73f471368f42b453d3d81a6d83fea634f2e89bbeeb656b060c9a9`
`font_01_sfnt_off00007de3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7DE3	18856 bytes
SHA-256: `8766e0671a13d697c3b662fc594ff1291c78762ad317851825326a3c80c447e4`

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