Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ac4ca920976d8c3…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 23:07:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: af9b011ed0c6c26da480748f9dfa0077 SHA-1: 32407320cda481d203bc0a03eda3908252b0d940 SHA-256: 1ac4ca920976d8c3373c6f70bdd6aba5cb42a09a48274b927bfc3513538c750f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a high-confidence heuristic firing for a 'game hack redirect lure', directing users to a URL that promises free game cheats. The ML classifier also strongly flagged this PDF as malicious. The primary IOC is the redirect URL, which likely leads to a site hosting further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/will-minecraft-dungeons-be-free-game-hack PDF link annotation
    • http://lib.icbc-indonesia.org/repository/how-to-get-any-item-for-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/pokemon-go-five-free-raid-passes_GM1094591345.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-demon_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/avatar-de-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/hunting-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/robux-claimer_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-rocitizens-money-cheat-2021_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-hack-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/minecraft-windows-10-mod-menu_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/descarga-hacks-de-robloxs-gratis_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/cheat-engine-max-health-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/street-kings-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/free-minecraft-resource-packs_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
font_00_sfnt_off000030a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A0 22380 bytes
SHA-256: 33619446f2ef99795a26fbfe45e47481fe1709e5068bda0381a1f4dcdd45f4d5
font_01_sfnt_off0000621c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621C 18796 bytes
SHA-256: a3e2eca43bdc685dc91cfde71aa7da7e93eda67de1cffc55b2ecd2ffb91a605f

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