PDF malware analysis — malicious · 8a7b531d1246d69d

MALICIOUS

PDF

34.0 KB Created: 2021-07-08 17:15:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 4391610d6a83ba90b7fea2a62c4b6372 SHA-1: 89568b80783e105177d80102d1544cb67570b573 SHA-256: 8a7b531d1246d69d8e1e75475fce309e1ea1a523573901b45e5e233af2f07061

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9824

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 http://netcdn.tw/app/406889139/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml-game-hack PDF link annotation
- https://vierabyragazze.com/upload/files/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-hack-spins-download_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/how-to-hack-roblox-without-downloading-any-apps_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/best-roblox-hack-api_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/roblox-mac-hack-2021_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/roblox-demon_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-tiktok-video_GM835599320.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-minecraft-maps_GM479516143.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/roblox-free-adidas_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-cheats-for-free-spins_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-robux-trade_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/master-coin-free-spin_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_001_off00002c38.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2C38	22424 bytes
SHA-256: `01b5328a30b3fbb5655a1789dfb849e541c4dab7277eb7da796981e31f8166a0`
`font_01_sfnt_off00005e40.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E40	19736 bytes
SHA-256: `17d286141fb92aca79f6fa2d77a0d502adf1cdb7fdcb36402b831fbaaedb5b1c`

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