PDF malware analysis — malicious · 858e2f3b59630c87

MALICIOUS

PDF

34.2 KB Created: 2021-07-02 05:13:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 7588dd21adf3e83a51e98a0d54b1ea8b SHA-1: 27f6f35ce90b152bd9770c0fe971ea8743bbb1d5 SHA-256: 858e2f3b59630c87152ee2d23386ede5da6fe070f412b5cfc666cc2e5052e389

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs that are presented as game hacks or generators for popular games like Roblox and Coin Master. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically flags this behavior, indicating the document's intent is to trick users into visiting these malicious links. The ML classifier also strongly suggests maliciousness, aligning with the lure-based attack pattern.

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/hacks-para-roblox-jailbreak-2021-game-hack PDF link annotation
- https://luyenthitoanpro.com/public/upload/files/hack-for-roblox-bee-swan-sumlaitor-may_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-minecraft-com_GM479516143.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/minecraft-app-free-download_GM479516143.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/coin-master-card-hack-app_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/minecraft-download-free-download_GM479516143.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/roblox-prison-life-hacks_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/bleach-primera-roblox-hack_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/roblox-jailbreak-best-teleport-hack_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-robux-app-2021_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/get-free-roblox_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/roblox-mobile-cheat-codes_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-online-games-roblox-no-download_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-robux-pin-codes-2021_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/roblox-clothes-codes-to-get-for-free_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-party-de-roblox-pisode-14_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_off00002ff5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FF5	21524 bytes
SHA-256: `45f80b8e40875d41e6dd0373009ed57a2f642c09cb3738b42bd0aeae612f22f6`
`font_01_sfnt_off00005f2a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F2A	19500 bytes
SHA-256: `61a4f119fb956eead5b2b6a3da485cebab72462dafc14312978a2dfe16fd43a4`

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