Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eff2e315edf421b…

MALICIOUS

PDF

35.6 KB Created: 2021-07-05 05:52:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 420d4f23b8f11e0ebb950664c294e905 SHA-1: 4003c7b2824edfe04e4fe93140f60d37affdd748 SHA-256: 3eff2e315edf421b73468e67fb7a538b314d8fd29c7c304a59d7a174cea9672f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a game hack redirect lure, pointing to a URL that likely hosts a malicious payload or phishing content. The document body and embedded URLs reinforce this by referencing game hacks and free generators, aiming to trick users into clicking the malicious link. No scripts were extracted from this sample.

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/406889139/coin-master-free-attack-game-hack PDF link annotation
    • http://library.umla.ac.id//repository/get-roebucks-com_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-free-robux-obby-link_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-pubg-uc-carding_GM1330123889.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/blox-fun-info_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-free-robux-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/new-free-money-links-coin-master_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.

FilenameKindSourceSize
font_00_sfnt_off00003410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3410 23396 bytes
SHA-256: 4700825f187451deba5cc23399ad820ea07b975da1561810978729ccac8c12b4
font_01_sfnt_off000068c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C6 18168 bytes
SHA-256: 75c6e626bf291d9515ad923a84f4b1e9b9d7c6cab114e50afbb6b6b9866eb8df

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