Malicious PDF — malware analysis report

Static analysis result for SHA-256 828466955d1726ad…

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 14:42:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c324b970a5616996cbdc90fee6994d92 SHA-1: cd3327d851dde0c16008dfd11afb005550cfc14b SHA-256: 828466955d1726ad9ea07d8efddc370b40affd6381874003e0bccc52bad3cf26
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector, which leads to a page offering 'free Minecraft skins' and a 'game hack'. This lure, combined with the ML classifier's high confidence, suggests the document is designed to redirect users to potentially malicious content or download further payloads. The presence of embedded URLs and the nature of the lure indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/479516143/free-minecraft-skins-game-hack In PDF document text
    • http://lib.fisipumt.ac.id/repository/easy-robux-today_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-daily-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/get-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/earn-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-free-wings_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/original-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/demon-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005138.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5138 25612 bytes
SHA-256: f6dc0d87e8c98c7e03f17f8a5e0413da1e665172cc71422697602d89c765d244
font_01_sfnt_off00008ade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADE 17740 bytes
SHA-256: 14879269a8559ae987a62032ee6d1223d63a0cf7b4214af4691cfda5a28d5ffa

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