Malicious PDF — malware analysis report

Static analysis result for SHA-256 d119c4c3dfde9e56…

MALICIOUS

PDF

42.6 KB Created: 2021-06-04 00:30:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b98538b208b73b1373050d44c540a784 SHA-1: 5c7597242ecde51b140becfb0be384a70be5a67e SHA-256: d119c4c3dfde9e56f927130d75e80a0d7ad28509ebf56b76e3ad202307edab8b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier strongly flagged this PDF as malicious. The document body and extracted URLs indicate a lure for free in-game items, likely leading to a phishing or scam site. Although no scripts were explicitly extracted, the presence of embedded URIs and the nature of the lure suggest an attempt to redirect the user to a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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/406889139/coin-master-card-link-free-game-hack In PDF document text
    • http://elibrary.perludem.org//repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-handbook_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/village-3-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/robux-survey_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/static-moonactive_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-hack-2021-without-verification_GM406889139.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
stream_004_off00004d61.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D61 24084 bytes
SHA-256: 2039e00a97a09438e99e3fee3d22f0c918a705deb10b8e12dea8007736c95494
font_01_sfnt_off0000845c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x845C 18056 bytes
SHA-256: 2c915f38770e083062bc98f9a3714c418532e4445745be163775e18eb12194f3

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