Malicious PDF — malware analysis report

Static analysis result for SHA-256 588ed470d068c159…

MALICIOUS

PDF

46.2 KB Created: 2021-06-09 01:10:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 50ba6020dcea5cb26fdee4e2950036a9 SHA-1: f46c717c084444c870ffa6d91cd09a8ba51f93bc SHA-256: 588ed470d068c159418be964e45b2df19ea69e11b38c6266967cc1a8cd6d7d4c
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors, specifically advertising a 'Roblox Arcane Adventures Hack Script'. The ML classifier also flagged this PDF as malicious. The primary lure appears to be a fake game hack generator, designed to trick users into visiting malicious sites that likely host further malware or phishing content.

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.tw/app/431946152/roblox-arcane-adventures-hack-script-game-hack In PDF document text
    • http://muslib.unmus.ac.id//repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/cm-daily-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-link-cheat_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-coin-master-s_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-robux_GM431946152.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_off000050e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50E4 27732 bytes
SHA-256: cbec5cd3152f327a32a14fb2c403a3207ccf1409c4032c6e294f0ad88a4424e0
font_01_sfnt_off00008f9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F9F 19012 bytes
SHA-256: 5530c4d303921bfbd414d5d9b80aeef822c4afe55eef32d49baaa05e6de5785c

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