Malicious PDF — malware analysis report

Static analysis result for SHA-256 22463d07ac24a8e7…

MALICIOUS

PDF

42.3 KB Created: 2021-05-13 00:34:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 287076146aebb42d9ec4f77077a25a36 SHA-1: 2fb32409718331ebbe4cf901aa94994113821f90 SHA-256: 22463d07ac24a8e7af7c242560a1b17299781c22f006dd0d64a5c3f0f3ff8e9a
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a game hack lure to entice users to click on embedded links. One primary link, https://netcdn.xyz/app/479516143/minecraft-java-edition-free-trial-game-hack, is identified as a malicious redirector. The document also contains heuristics indicating a remote support tool lure, suggesting a potential pretext for further compromise or access. No scripts were extracted, but the embedded links and lure themes strongly indicate a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.xyz/app/479516143/minecraft-java-edition-free-trial-game-hack In PDF document text
    • http://www.library.smactf.sch.id/repository/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/coin-master-strategy_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/roblox-free-download_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/getrobux-now_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/change-roblox-username-free_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_003_off00004c3b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C3B 24280 bytes
SHA-256: 693885ba25d44fd7f3730dbf0b1bf74cc59b38dafdb6b7ea73504170e8af8f9b
font_01_sfnt_off00008330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8330 18240 bytes
SHA-256: 1be29b22a500e2a60a7236cc7f3818504a778037c129f908a3826a58d12b939a

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