PDF malware analysis — malicious · 9ddcd27a76312dc1

MALICIOUS

PDF

34.4 KB Created: 2021-07-07 02:37:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: e1a9e20ed660acfab9b97ee75de0e6bf SHA-1: 9d26675181fb2d35bc99169446c8d0a685e8dafa SHA-256: 9ddcd27a76312dc1ca0a6171854ffe1fec707e3f942818b664a64efbd47b3a0b

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/406889139/free-coins--spins-coin-master-game-hack PDF link annotation
- https://www.itc-nekretnine.hr/files/hacks-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/keisyo-robux-for-free-from-code-keisyo_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/is-roblox-studio-free_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/roblox-piano-hack_GM431946152.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/rbxdemon_GM431946152.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/roblox-hack-peoples-account_GM431946152.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
- http://itc-nekretnine.hr/files/how-to-free-tiktok-likes_GM835599320.pdfIn PDF document text
- http://itc-nekretnine.hr/files/free-roblox_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/free-robux-just-email-verification-and-done_GM431946152.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
- http://itc-nekretnine.hr/files/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/roblox-free-badges-game_GM431946152.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/coin-master-free-in-app-purchases_GM406889139.pdfIn PDF document text
- http://itc-nekretnine.hr/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/girl-roblox-avatar_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
`stream_002_off0000317a.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x317A	22692 bytes
SHA-256: `de642c35b7fabec116a5dbffdcc5b24b36d011346eaa43fc8dd1ca2c5b61d0fe`
`font_01_sfnt_off00006413.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6413	18176 bytes
SHA-256: `246b8f63ccaeedbc6bff36fe6e73479c50587f584be52e68ff18fc4d6b5689c3`

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