PDF malware analysis — malicious · 8673297f87ffc65f

MALICIOUS

PDF

46.5 KB Created: 2021-06-03 15:18:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 3c230bf14adbc7feab3a5371404acf12 SHA-1: 27301b572eb2184745acfb6bd84736ac9bb66fa3 SHA-256: 8673297f87ffc65f33de19eb3252301543fa573a99115ea81d80f784fcfe0ecb

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 0.9748

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/479516143/free-minecraft-realm-codes-game-hack PDF link annotation
- https://www.jcn.co.uk/uploads/files/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-hack-coin-master-game-2021_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-launcher-free_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-free-body_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-place_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/get-free-robux-today_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-online-free-download_GM479516143.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_off0000515f.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x515F	24424 bytes
SHA-256: `0c526f0645c712a361e994f43aaaf3b9f8db4a46e2d181c24dc2080f1f9ba770`
`font_01_sfnt_off0000891c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x891C	3128 bytes
SHA-256: `801f6fa60decd1add2f223f91580103c35e150c924465f86a7a572b3e00674f9`
`font_02_sfnt_off0000935b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x935B	18216 bytes
SHA-256: `112831491273e470c6e89805da9a532ffdffe59a8001213273075a33f4492bfc`

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