PDF malware analysis — malicious · 2b03592ebbf2519b

MALICIOUS

PDF

44.5 KB Created: 2021-06-03 14:49:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: f2c0005f12eca5d3ab3b1aad7b3f5e3c SHA-1: 4ebb10028505ae623267a467ebdf64809e22ddd5 SHA-256: 2b03592ebbf2519b87a73e18394dfe91b633ee0e3ec14c33b4bfd26fdb216854

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 0.9865

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 https://netcdn.online/app/406889139/coin-master-free-spins-link-no-verification-2021-game-hack PDF link annotation
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-gang_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-roblox-followers_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/who-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-spins-coinmaster_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-minecraft-gift-card_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_004_off000051e7.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x51E7	25456 bytes
SHA-256: `e488cd8107cc364de5f8f6ea6199832dc3e7c0474f8d26c67d0c52febc19dcc2`
`font_01_sfnt_off00008a79.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A79	18592 bytes
SHA-256: `f74899e085c91cd53f5ca09b8a5278408f496fc0c0b246b6d10c1aa0f6296d24`

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