PDF malware analysis — malicious · b74207aedb27b04c

MALICIOUS

PDF

45.7 KB Created: 2021-06-03 15:56:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 493bbdc20b2b7bc1f8a73d984593c15a SHA-1: 5252f742d9baa2d663ca7a87f8c677633915fcef SHA-256: b74207aedb27b04cc72fc874b8a8b4888770d4986478e61a7058866e068cd031

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 0.9864

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/legit-coin-master-hack-site-zyngaplayerforumscom-game-hack PDF link annotation
- https://www.jcn.co.uk/uploads/files/files/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-download_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/pokemon-go-free-app-download_GM1094591345.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-hack-app_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/getrobux-come_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-army-free-robux_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_004_off000051c1.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x51C1	26256 bytes
SHA-256: `b3bf30dd4f06ad720a8bbb115a13079467900e0ad533a0a6d2c11b5466db16de`
`font_01_sfnt_off00008dfa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DFA	18928 bytes
SHA-256: `2d8f15398b0872070122c1c8280df31c6af84f2aed26de9ea3bfb6d3ad73ce84`

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