PDF malware analysis — malicious · b611aee0e51fecca

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 19:54:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 4d10c6c5fe4d4c33830b578d6e029b97 SHA-1: fe4983cbbd1efc8609254583939ce751ca3fe5a4 SHA-256: b611aee0e51feccae4d8b15db2ada2a4d2cae0ea77d7772e7ccfea63e19868bc

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/latest-free-spin-coin-master-daily-game-hack PDF link annotation
- http://www.rewaqousha.net/userfiles/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/cm-daily-spins_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/free-robux-come_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/free-coin-master-credit_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/coin-master-free-items_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/www-coin-master_GM406889139.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_off00005180.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5180	26056 bytes
SHA-256: `8fedce0d9ced21f7db2a3c9595ef88c0c6c5154145adf9f935d208f05c2372f4`
`font_01_sfnt_off00008ced.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8CED	18308 bytes
SHA-256: `33b54ae1ad693c119f0cea53781b273ddfe293e057ee7515dcb4c42791ffe801`

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