Malicious PDF — malware analysis report

Static analysis result for SHA-256 4158e51eccde8116…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 06:17:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 560a73d8df5bcd927d49851252cb75c7 SHA-1: c0aed6d22377b00f649a1e48a67d1793147b789e SHA-256: 4158e51eccde8116e09b6c9282df478d0e5b017da5b166087890279db269aa48
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a common lure of 'free game passes' for Roblox to trick users into visiting a malicious URL. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this is a scam or phishing attempt. No scripts were extracted, but the embedded URLs are the primary indicators of compromise, likely leading to credential harvesting or further malware delivery.

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/how-to-get-free-gamepasses-on-roblox-game-hack PDF link annotation
    • http://www.otomasi.uinjambi.ac.id/repository/gcomment-hacker-strucid-roblox_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/take-anyones-robux-hack-created-by-robuxian_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/girl-clothes-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-level-3_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/hacks-for-free-robux-on-roblox-no-human-verify_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/hack-any-roblox-game_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/hack-script-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/i-want-to-break-free-roblox-id_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/casper-hack-roblox-jailbreak_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.

FilenameKindSourceSize
font_00_sfnt_off00002e45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E45 22800 bytes
SHA-256: 15c46c5b7cd7163998220bca8e293776ce6a8fe7201f99c6c8c34677a28fa6f2
font_01_sfnt_off0000618a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618A 19356 bytes
SHA-256: c4896df15a0e6a62920d63d504b7f77c5e25ec731e2dd301a46ee6934e748c38

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