Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6c556b002b87a03…

MALICIOUS

PDF

34.8 KB Created: 2021-06-18 15:08:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8ea51b35a89b9097200d73fc613fb0cb SHA-1: 31b8a9b42c9793003832a5872a76c80ba87468d3 SHA-256: c6c556b002b87a03ce80990edebb152a7976acaca3c212334655b231b1494a86
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.co/app/431946152/hack-robux-2021-inspect-element-game-hack PDF link annotation
    • http://library.ulb.ac.id//repository/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/sentinel-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-android-game_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/troll-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-free-recompense_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/cch-ly-robux-free-ko-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/cheats-max-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-adminon-all-roblox-game_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-for-watching-videos_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-donate-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-robux-nicsterv-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-15-robux-for-free_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1C 22376 bytes
SHA-256: af21dbf2fbc429b0a2aa3afbd6b4e45d49a350891296685a12da37e15de4a303
font_01_sfnt_off000060d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D2 19736 bytes
SHA-256: 40ad8ac56cf310b29d88b2a45c7d5b688b2d3ff0e1adeecb71cde8c0f3f919cf

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