Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6a94a7d1d1e75c3…

MALICIOUS

PDF

45.7 KB Created: 2021-05-10 17:00:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0dfbbdfac3ad289bd15781ee97fbc397 SHA-1: dcccc365bfac76c2bc956305295f60ee6491a3f1 SHA-256: c6a94a7d1d1e75c37742fe9d23022d624dce5f87587422b6116490be82859431
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a game hack, directing users to a malicious URL. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to potentially malicious content. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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.xyz/app/406889139/coin-master-hack-no-survey-2021-game-hack PDF link annotation
    • http://www.perpusffup.or.id/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-pet-snacks-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-no-verification-or-survey-2021_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d1a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D1A 24620 bytes
SHA-256: 0075d369a8a690241d62765dc46fb7f7e74585a15d0d9d6009ce8f43e1f3200a
font_01_sfnt_off00008559.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8559 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F44 18552 bytes
SHA-256: 08b93b8e79f8f8fdf66b2b731fa8b5bfc2f7a48790bf7a909dc60fe86eb0a381

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