Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c3c4b47e44eaa86…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 16:35:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 034a319b0aa6de1493745f45f3e76409 SHA-1: fe147427ed885adba48f6a40ba508adefba24c74 SHA-256: 1c3c4b47e44eaa8654e278d4b4acf21b5e75cc62a1e4ef6e1c7d9a79f4428a1f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple embedded URLs that redirect to sites offering 'free game hacks' or 'generators', a common lure for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, and the presence of these lures indicates an attempt to trick users into visiting potentially harmful external resources. No scripts were extracted, but the document's structure and embedded links suggest it's designed to lead users to a malicious website.

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/479516143/free-mojang-account-with-minecraft-game-hack PDF link annotation
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-robux-roblox-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/dsploit-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-hack-roblox-app_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/spin-and-coin_GM406889139.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/cheat-roblox-ios_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/roblox-free-avatar-items_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-get-a-free-radio-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-get-seer-om-roblox-mm2-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-get-a-free-private-server-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/roblox-how-to-hack-royale-high-for-diamonds_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-hack-robux-with-cheat-engine-62_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/como-hackear-cualquier-cuenta-de-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/infinite-health-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/speed-hack-mac-roblox_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_off00003133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3133 22724 bytes
SHA-256: b33cfced16d6b87fc6397ec5c9db2406406cca1357cc0ce713a1778809b530a6
font_01_sfnt_off0000643e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x643E 18688 bytes
SHA-256: 60143c81e88e14cdfb7631f3b4f61d617c046054e7601d01d98adb150323207f

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