Malicious PDF — malware analysis report

Static analysis result for SHA-256 8100aee954bf7de5…

MALICIOUS

PDF

33.9 KB Created: 2021-07-03 21:43:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 69f02255b68d77a8be08f8bf6a53abd0 SHA-1: f71f3df6a54ef911d6e8c98b79f1a808ff66b681 SHA-256: 8100aee954bf7de5a3a8fc1c388d247d4cbd2724471a8d101dd202ba9c22ac1a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, pointing to 'free generator / game hack' lures. The primary malicious URL identified is http://netcdn.tw/app/479516143/how-to-get-free-minecraft-coins-game-hack. This suggests a phishing or scam attempt to redirect users to potentially harmful content, likely as an initial access vector via spearphishing.

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.tw/app/479516143/how-to-get-free-minecraft-coins-game-hack In PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/pokemon-go-free-coins-no-verification_GM1094591345.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/how-to-get-free-robux-without-downloading-anything-2021_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/roblox-avatar-girl_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/redeem-roblox-virtual-item-free_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/earn-robux-com_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/coin-master-spin-link-free_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/real-robux-codes_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-robux-place_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_off000031e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E6 22092 bytes
SHA-256: bf0f68cc0761b284a91ee50be8715dca9ca8574c509457a1fc8763287ca54d3f
font_01_sfnt_off00006232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6232 18164 bytes
SHA-256: beda6d2eeaedf06c4f9c71f25ee73c2930771b9967372e0e5b2633e02f8c4c40

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