Malicious PDF — malware analysis report

Static analysis result for SHA-256 be0c32994e7ea027…

MALICIOUS

PDF

34.3 KB Created: 2021-07-01 15:23:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 539b517d3a27b8d84a6a32537083720b SHA-1: 1cc2e566c3e101a11b34ac7bc804cf812c4aa8c0 SHA-256: be0c32994e7ea027c4a4a12a6a6aa08e9d5108fc718167d7a5044448c75efdcd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and document body text that explicitly advertise game hacks and free currency generators for popular games like Roblox and Coin Master. These links direct to a known malicious redirector infrastructure, indicating a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious.

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/meme-attack-roblox-cheats-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-fix-roblox-studio-from-hacking_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-groups-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/can-you-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/tiktok-free-wala_GM835599320.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-jailbreak-roblox-7-february-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-promo-codes-free-robux_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_off00002f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F27 22220 bytes
SHA-256: 3f1443d99b81df6a147e8fcbb430ab0c211566b6c5c63a055c43cdb33eeef14a
font_01_sfnt_off00006025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6025 19384 bytes
SHA-256: 4b771da846c52368a17b3e0a27a910a15d03664d6d162798246b3619aadc814d