PDF malware analysis — malicious · 5d63c0fbd1ba3b0b

MALICIOUS

PDF

33.8 KB Created: 2021-07-03 13:41:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: e5597d775b095f00a9323101766a073c SHA-1: 848bcee2748e47b49a0e0e39eeb9090e5f40257d SHA-256: 5d63c0fbd1ba3b0bb89c1517bdf120d0521236e8d5ba243e58f9b93d077e7aab

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector, masquerading as a free game hack or generator. The primary lure is 'Minecraft Windows 10 Edition Free Download', directing users to http://netcdn.tw/app/479516143/minecraft-windows-10-edition-free-download-game-hack. This infrastructure likely serves as a gateway to further malicious content or downloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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
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/479516143/minecraft-windows-10-edition-free-download-game-hack In PDF document text
- https://loba.com.vn/public/upload/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/comment-hacker-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/comment-hack-roblox-en-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-remove-default-clothing-for-free-roblox_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-roblox-on-mac-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/new-roblox-swordburst-2-hack_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-hacked-sitted_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hack-into-roblox-acount_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-promo-codes-roblox-robux-2021_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_off00003051.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3051	21600 bytes
SHA-256: `5b69dc8a793339b4c92241bdca233072773d5a311aa86fcf76a75ae1a590d154`
`font_01_sfnt_off00005ef0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5EF0	19056 bytes
SHA-256: `1fbd96916373957abb899fec4ad8fc3866d81e0306805064b2b02ab8661ee979`

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