Malicious PDF — malware analysis report

Static analysis result for SHA-256 93bd73c61a19b14e…

MALICIOUS

PDF

46.0 KB Created: 2021-06-03 14:17:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5ffcfbedd430dca41b293575402bcf69 SHA-1: 661cd3203bb356d9966372cdba58ced31d5a5bf8 SHA-256: 93bd73c61a19b14e6c2697426944a8f372eee3ffc3fecd7185a0830a20c7646e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that are flagged as malicious redirectors, specifically promoting 'free generator' or 'game hack' lures. The document body and extracted URLs suggest a social engineering tactic to trick users into visiting these sites, which likely host further malicious content or facilitate malware downloads. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.online/app/431946152/codes-for-2021-november-for-free-robux-game-hack In PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-355_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-hack-without-verify_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/tiktok-free-wala_GM835599320.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_off000052d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52D9 26772 bytes
SHA-256: 568057548a0eae91376320b58aae1077480c46e2b65e04f596c7a9888e563b8e
font_01_sfnt_off00008f04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F04 18964 bytes
SHA-256: e0e332cd73142c2027b87614454f66f0dbe93e42bb763d27b59d07d1ee9dd348

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