Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dbe2cc10477b078…

MALICIOUS

PDF

34.1 KB Created: 2021-06-26 02:56:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a5315d21e980a3758843ae35475f8d1b SHA-1: 8e07e7e8a9c8b9cfce7f9c69e39f6fa68c46cd58 SHA-256: 3dbe2cc10477b078000215b708db54427cc034c06a46360dbdcab93cec7d6272
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for free virtual currency and game items, directing users to external URLs for downloads. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs suggests an attempt to redirect users to malicious sites or download further payloads. No scripts were extracted, but the document's content and external links indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-to-get-one-free-robux-game-hack In PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-wings-codes_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-116-1-download_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-download-for-android_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-mod-updater_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/collect-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-love-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/dragon-ball-fury-roblox-cheats_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_off00002fcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCB 22260 bytes
SHA-256: d570b9ad0006af92f5e533e7cb8bb036603f5412b08c13ec90a1ad9edaee9877
font_01_sfnt_off0000604e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604E 18984 bytes
SHA-256: 32dd79e2aba484d048822df17d14eeb8b799bd21c16ca362af22b99dbfffbc49

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