PDF malware analysis — malicious · b140d1effea368b1

MALICIOUS

PDF

46.5 KB Created: 2021-06-03 07:18:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 3e7415c1583ba1452e736d749433df17 SHA-1: ed0e0381a59d3483ce77b6e421a5c7cba97367cb SHA-256: b140d1effea368b18c54520054440f150539a94acb28e8a1267b8358bee0f7e2

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/431946152/free-robux-without-human-verification-2021-game-hack PDF link annotation
- https://www.woundcare-today.com/uploads/files/files/free-robux-no-password_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-robux-instantly_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/100-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/hack-avatar_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/robux-free-c_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-roblox-gfx_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/fast-robux-online_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/oprewards-free-robux_GM431946152.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
`font_00_sfnt_off000054c2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x54C2	25460 bytes
SHA-256: `e3207890952b7d6c6f80985f1e7354afe4de1ad4e593713465ec996f5b77c54f`
`font_01_sfnt_off00008f60.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F60	19624 bytes
SHA-256: `5c907f8fc0171ac382cbe47737dfe307495a07ea2f2097b2a41ed37680731fb3`

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