PDF malware analysis — malicious · 7a9820b1419d5b21

MALICIOUS

PDF

41.4 KB Created: 2021-05-15 13:37:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23

MD5: 7d40134b021d87ecde3eea53672bffd1 SHA-1: adc86d95ec3819dcd0e19c9002a6cfe4a1556b53 SHA-256: 7a9820b1419d5b21976e6f2155e01444c5b2a387bdc3e5b919887ff7d2d273b0

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 0.9971

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.xyz/app/406889139/coin-master-gift-link-game-hack PDF link annotation
- https://jdlgroup.ca/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://jdlgroup.ca/images/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
- https://jdlgroup.ca/images/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://jdlgroup.ca/images/rbx-sites_GM431946152.pdfIn PDF document text
- https://jdlgroup.ca/images/minecraft-free-download-android_GM479516143.pdfIn PDF document text
- https://jdlgroup.ca/images/roblox-com-r_GM431946152.pdfIn PDF document text
- https://jdlgroup.ca/images/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
- https://jdlgroup.ca/images/free-free-robux_GM431946152.pdfIn PDF document text
- https://jdlgroup.ca/images/coin-master-daily-spin-link_GM406889139.pdfIn PDF document text
- https://jdlgroup.ca/images/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
- https://jdlgroup.ca/images/roblox-free-clothes-generator_GM431946152.pdfIn PDF document text
- https://jdlgroup.ca/images/how-to-get-more-robux_GM431946152.pdfIn PDF document text
- https://jdlgroup.ca/images/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
- https://jdlgroup.ca/images/easy-robux-com_GM431946152.pdfIn PDF document text
- https://jdlgroup.ca/images/free-robux-group_GM431946152.pdfIn PDF document text
- https://jdlgroup.ca/images/www-robux-us_GM431946152.pdfIn PDF document text
- https://jdlgroup.ca/images/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
- https://jdlgroup.ca/images/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
- https://jdlgroup.ca/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://jdlgroup.ca/images/minecraft-items_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_003_off000047d8.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x47D8	24740 bytes
SHA-256: `fae38ae0563dc56e085621ed1ac825a5cc055b2822c2979ce5ca07897a65621f`
`font_01_sfnt_off000080f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x80F8	17716 bytes
SHA-256: `8f803537a119e07ded82a73af47a81e82657788fe52602d20bb0bf58e866784a`

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