PDF malware analysis — malicious · c97e8af1c7178578

MALICIOUS

PDF

47.1 KB Created: 2021-06-03 16:15:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 9ff00c7f2075ad490bc603d23680ab37 SHA-1: 96602ddfbae2c54ef1ffd6755cbd93bef73317bd SHA-256: c97e8af1c7178578accc8bf5d82c1766d20930ea0f6b3ef966ea733b921e629c

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 0.9832

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/minecraft-hacker-mask-game-hack PDF link annotation
- https://www.jcn.co.uk/uploads/files/files/free-robux-app_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-hack-org_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-hack-2021-android_GM406889139.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/coin-master-money-hack_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-earn_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-apk-mod-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-free-play-now_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/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/tiktok-minecraft-hacks_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_off00005577.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5577	29672 bytes
SHA-256: `2bb29c953d2814e69ce7ac6a112660d46bc783a3af7bc5e2a809eb9c00587c52`
`font_01_sfnt_off00009793.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9793	17740 bytes
SHA-256: `0307ae1fdf286ae380d36e270ef5c992f348f7a5470d5d5ce449782a5f21d577`

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