Malicious PDF — malware analysis report

Static analysis result for SHA-256 75028fdd654f28c8…

MALICIOUS

PDF

34.8 KB Created: 2021-06-30 13:29:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 6e05daa6988c1e92930a66aae010128f SHA-1: d489a06599efc3e06f243623312ec83d804222d7 SHA-256: 75028fdd654f28c850843bc9c15e094637eafa1013b4fa90469065b49bb8dfeb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, specifically promoting game hacks and free currency. The heuristic firings confirm these links lead to known malicious redirectors and lures for game-related exploits. While no scripts were explicitly extracted, the document's structure and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content.

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/hack-icebreaker-roblox-game-hack In PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-rocitizens-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/invicibility-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-free-education_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/snippet-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/animation-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/codes-for-roblox-free-website_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-hack-october-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-cards-giveaway_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/bee-swarm-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-tiktok-fans-hack_GM835599320.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn 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_off00003120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3120 22660 bytes
SHA-256: 0db02c36ea6e1c557bfebc51f03fd202d229b593a9f717941a6456d002b42af8
font_01_sfnt_off00006426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6426 18656 bytes
SHA-256: c6e17e5bf565237012ff9951535deb488ab795721275ba1584a03434d374e1c4

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