PDF malware analysis — malicious · bcc61d957a7889cc

MALICIOUS

PDF

49.3 KB Created: 2021-06-09 03:53:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 7965335c9503af5525656a9b366b9a39 SHA-1: 551fde013afc495b4cc5c826b0e478c6910f1c8f SHA-256: bcc61d957a7889cce1c82591c7eb88691e2de8b1b60f77b2741bd00a1dc81d07

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 0.9796

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.tw/app/431946152/how-to-labeled-cheater-in-roblox-parkour-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-free-bundles_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-roblox-trackid-sp006_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hack-coin-master-ios_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-code-cards-website_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005420.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5420	26988 bytes
SHA-256: `b61aa74501f6c50f885f0e6602b92cef5841cd1f8cfe10677ccbbc60aacfdd33`
`font_01_sfnt_off00009064.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9064	3120 bytes
SHA-256: `49734f51977507cba6bc8d3ad0cee0363aa119856db094427deb9cf565bb7bca`
`font_02_sfnt_off00009b77.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9B77	19084 bytes
SHA-256: `cf66477f4bd7be9ac1d47010a0e95cd9ca46ef355e523f8c679576e7d56c2a74`

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