PDF malware analysis — malicious · a099dfd6c034af75

MALICIOUS

PDF

34.1 KB Created: 2021-06-20 18:34:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22

MD5: 78b33f158b2bd56651208d294703fff2 SHA-1: 0e205015288ba73e4f32cdc759b0e36ae5c27b44 SHA-256: a099dfd6c034af75ea2ebd0f851f7281f53e1023e455a5d473d776f1294b51a9

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 0.9980

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.co/app/431946152/how-to-get-free-robux-without-gift-cards-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/coin-master-hack-mod_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-free-body_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-coin-master-links_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-2021-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hack-roblox-players_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-no-verification-2021_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-hack-como-tener-robux-gratis-2021-nuevo-truco_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/robux-gift-card-free_GM431946152.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/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/offers-to-complete-and-get-free-spins-in-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
`font_00_sfnt_off00002f79.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F79	21544 bytes
SHA-256: `5d5d698a30e03f1a8111788f601c2285f5a05a8ec5c5d3dc41432b965748cf4f`
`font_01_sfnt_off00005e82.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E82	19644 bytes
SHA-256: `69f1ea22c57778ad67fdd0d4e99d64374ff04791dbc4b76be1b2e6e7d6324bcf`

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