Malicious PDF — malware analysis report

Static analysis result for SHA-256 c43b0a0ea8605cf5…

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 23:34:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2f42c1e3fcd9d8ecf3c66b51f5452d0c SHA-1: bce2b57847b319254652a3c104c57d7f5c66dbc6 SHA-256: c43b0a0ea8605cf56e27e984bc9d55d3fde46d3877e4e84f068b808c31d36e52
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, with a primary URL pointing to a 'free generator / game hack' lure. This suggests the document is designed to trick users into visiting malicious websites, likely to download further malware or engage in credential harvesting. No scripts were extracted, but the presence of numerous suspicious URLs and the high ML classifier score indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/479516143/minecraft-switch-free-game-hack PDF link annotation
    • http://muslib.unmus.ac.id/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/robux-free-promo-codes_GM431946152.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/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-code-hack_GM406889139.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_off000050cf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50CF 25092 bytes
SHA-256: 1d2a7ddcd06b9d686eec1a88a01a9788dcc30f60ec3b19650b37846168fcda44
font_01_sfnt_off00008a50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A50 17896 bytes
SHA-256: 007033aff5279ca1734c8b5acd2e97475fe5046f63b80ac47a6a8ac54a1add4f

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