PDF malware analysis — malicious · f783baf22f8a0d12

MALICIOUS

PDF

33.2 KB Created: 2021-07-05 03:46:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 73173453b0f20cb36a918ddb486cf980 SHA-1: e2d17f3bfc1995b2e7cde5df2894e6c570bc0170 SHA-256: f783baf22f8a0d127e3781b3ea6bc8c0a8bbe261e7640c12ec379eeb452d9b6c

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.tw/app/431946152/roblox-apk-hack-game-hack PDF link annotation
- https://7gking.tw/upload/files/free-pins-for-robux_GM431946152.pdfIn PDF document text
- https://7gking.tw/upload/files/promo-codes-for-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://7gking.tw/upload/files/free-injector-roblox_GM431946152.pdfIn PDF document text
- https://7gking.tw/upload/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://7gking.tw/upload/files/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
- https://7gking.tw/upload/files/robux-free-2021_GM431946152.pdfIn PDF document text
- https://7gking.tw/upload/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://7gking.tw/upload/files/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
- https://7gking.tw/upload/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
- https://7gking.tw/upload/files/roblox-pet-simolator-hacks_GM431946152.pdfIn PDF document text
- https://7gking.tw/upload/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://7gking.tw/upload/files/how-to-hack-roblox-with-v3rmillion_GM431946152.pdfIn PDF document text
- https://7gking.tw/upload/files/free-robux-inspecting-method_GM431946152.pdfIn PDF document text
- https://7gking.tw/upload/files/crate-opening-roblox-hack_GM431946152.pdfIn PDF document text
- https://7gking.tw/upload/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- https://7gking.tw/upload/files/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
- https://7gking.tw/upload/files/how-to-hack-roblox-apk_GM431946152.pdfIn PDF document text
- https://7gking.tw/upload/files/free-roblox-jailbreak_GM431946152.pdfIn PDF document text
- https://7gking.tw/upload/files/wurst-hacked-client_GM479516143.pdfIn PDF document text
- https://7gking.tw/upload/files/coin-master-cheat-codes_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_off00002baf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2BAF	22204 bytes
SHA-256: `d892d72a5cf87da80b7b8baed3137e806a2ad69f97a47fcc1a2ba80a831cccc4`
`font_01_sfnt_off00005d1f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D1F	18832 bytes
SHA-256: `4a54e3c0999d22341ed87b7a4ab614cdfd6f3715e6a9eb51b324e9e7408846b1`

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