Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c238ccab886e280…

MALICIOUS

PDF

46.8 KB Created: 2021-05-14 15:04:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6fd053eb5b3f923cd1db36b948f2ec50 SHA-1: 28db74b5c44c377033a9446174e9ef1a5a2c2242 SHA-256: 7c238ccab886e2804e346705528b508a108296ad37d8c35d11cfee80ba3dabe1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure for game hacks and free spins, directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URL and the nature of the lure suggest a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/free-spins-coin-master-app-ios-game-hack PDF link annotation
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/gain-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/coin-master-free-spins-cheat-codes_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/wurst-18_GM479516143.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/microsoft-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mankotim.sch.id/__statics/gudangsoal/files/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b86.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B86 29316 bytes
SHA-256: 2b8b7a669b264aee18d1af0d606f94296ab572b00b5b0c0fd848fa6bd754e45b
font_01_sfnt_off00008934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8934 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off000095b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95B9 17884 bytes
SHA-256: baa69023d18af7e6e292b7ed0352255ac8c665d65dfdd35f206937513cc9840e

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