Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c29602fe326ed57…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 22:05:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6a581bb133ad76cb7ac5a8f16f710599 SHA-1: 105fcef3b584a51697ca7023b493f57e40ef5a3a SHA-256: 9c29602fe326ed577a24d43e3129306d9b4b0286fcfd657d15065db6ffba79f1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link to 'http://netcdn.tw/app/406889139/tiradas-coin-master-game-hack', which is identified as a lure for game hacks. This heuristic, combined with the ML classifier's high confidence, indicates a malicious intent to redirect users to a potentially harmful site. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering tactic to trick users into visiting a malicious domain.

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/tiradas-coin-master-game-hack PDF link annotation
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-boombox-highschool-2-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/mcpe_GM479516143.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/give-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-cheat-codes-free_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-robux-app_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/how-to-get-spins-for-free-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/robux-download_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/cm-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/funcionando-nuevo-hack-roblox-jailbreak-phantom-forces-booga-booga_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021-real_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-free-spins-and-coins-for-today_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
font_00_sfnt_off0000311d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x311D 22524 bytes
SHA-256: acc34cb7ab765f43ebee50ea61337cb3c52c935a72c1eab408507af3fbd770e6
font_01_sfnt_off0000636f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636F 18008 bytes
SHA-256: 1517448e5cb5491a8762f03d7a12fd9e2630db1a5422f13ad5a0407bb0291b05

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