Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c97cb4dca2446bf…

MALICIOUS

PDF

34.0 KB Created: 2021-07-08 16:09:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9aadbfde8c017c40289b4e3a7501ca01 SHA-1: b41abd2b23feafdeab6f4765beb796d530c0c729 SHA-256: 0c97cb4dca2446bfd869d4ac474588d1d3e6267ea55845f2c9741008b4b421d6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/406889139/free-spin-coin-master-twitter-game-hack PDF link annotation
    • http://opac.stieimalang.ac.id/repository/roblox-moderators_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-invincibility-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-roblox-toy-june-2021_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-hack-roblox-accounts-2021-august_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-robux-promo-codes-august-2021_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/how-to-get-cheap-pubg-uc_GM1330123889.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_002_off00002ff4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FF4 22384 bytes
SHA-256: 9def407efd55af3a9570c38c08135a7e351a5583e1604e18200fe70cb489848c
font_01_sfnt_off000061e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E5 18336 bytes
SHA-256: dbab6a80daafa71f1e061f75c0d82e12a0e9023e308b0b95e4f6d3b99741e995

Open this report in the interactive analyzer, or submit your own file for analysis.