PDF malware analysis — malicious · 4e5236e794336eca

MALICIOUS

PDF

48.1 KB Created: 2021-06-03 15:57:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: a93caeec7600a861f0d0adb84585cddc SHA-1: d5964a7a8729ad011d9647f9b1f53e797807188d SHA-256: 4e5236e794336eca798c2f0eaec393118b7c18365c2970a0db0a4b0fec89cff1

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 0.9796

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/431946152/how-to-get-free-unlimited-robux-game-hack PDF link annotation
- https://www.jcn.co.uk/uploads/files/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-robux-for-free-2021_GM431946152.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-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-and-spin-link_GM406889139.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/free-robux-easy_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/download-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-draw-roblox_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-verified-on-tiktok-for-free_GM835599320.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-unlimited-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off000050c3.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x50C3	25372 bytes
SHA-256: `9ae3b535ff8cd701f588b79ee14c6ed1c2d625dce46066de0f9b018218b7773a`
`font_01_sfnt_off00008a6b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A6B	3884 bytes
SHA-256: `40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf`
`font_02_sfnt_off00009713.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9713	19096 bytes
SHA-256: `9b17e9a23becacda63dddbc7f165c1e9b21e0166e4f27ededabbca260bf2e523`

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