Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d5e106fae844683…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 13:32:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a4bd7cd5674135931ca44580ae41403d SHA-1: 1ba302cd249ddc8763df6230963d9b1548b53170 SHA-256: 4d5e106fae844683584f6024bca4a2bd058601956fd6dfd7bf54c0b1aa90acd3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to game hack generators and free currency lures, with a primary link identified as a malicious redirector. This indicates a social engineering attack designed to lead users to potentially harmful websites. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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/431946152/roblox-hack-me-robux-game-hack In PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-hack-people_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-hack-mod-apk-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/hacks-para-skywars-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-tiktok-followers-in-5-minutes_GM835599320.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-roblox-barbie-tips_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-surf-hack-script-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/pokemon-go-free-808-pokedex_GM1094591345.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_off00003113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3113 22524 bytes
SHA-256: fd01be9f2557477930a8a96e07d9da621bef4153db505e8512d7a170f893f2fb
font_01_sfnt_off00006352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6352 18804 bytes
SHA-256: 324c308416a1306ffa1a56ded3ae1d81f1fc48e3a1d03a6e1296a6a0e0ba7348

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