PDF malware analysis — malicious · 58280958a3e97f76

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 14:00:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 597a6ac6fe8d706f81069834d48c38f2 SHA-1: 98bc34338f5ff937990e53eff1316ae305fea097 SHA-256: 58280958a3e97f769a36d605ac80211abd658a77312dcaccbf6a9dddf73da5e2

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free currency, directing users to the URL http://netcdn.tw/app/431946152/how-to-get-free-roebucks-without-verification-game-hack. This URL is associated with a game hack redirector, indicating a likely attempt to deliver a malicious payload or phish for credentials. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a social engineering attack.

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/how-to-get-free-roebucks-without-verification-game-hack PDF link annotation
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-cheats-free_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/apx-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/gfx-maker-free-roblox_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/113-hacked-client_GM479516143.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-hack-a-person-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-hacksco_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/game-hunters-coin-master_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-get-free-robux-subscribe_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-free-gold_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-get-roblox-hack-for-free-guns-apocalypse-rizing_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-game-hack-link_GM406889139.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_off00003102.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3102	22556 bytes
SHA-256: `526cbb471e53f45aa42ff18c1cac476fa63fa06a6f8f3cb1f5e2b176dd7dbb41`
`font_01_sfnt_off00006351.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6351	19564 bytes
SHA-256: `9f7482f6da1ff2c580fc6fdb6711db36ab36ad0569cde63c940962ab18b633f8`

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