Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cd8a66160c2964f…

MALICIOUS

PDF

43.5 KB Created: 2021-05-18 04:44:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 4558558801a9e1dd2c14d1a38093d546 SHA-1: ccbe59cf7f47cc1aa0863b29bce128c1deac9f11 SHA-256: 8cd8a66160c2964f322d89da189a41c8020f84aeb93abd4ad898cda4c1a13a02
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to a malicious URL, masquerading as a "free generator / game hack". The ML classifier strongly indicated maliciousness, and the presence of multiple lures and external links supports a phishing or scamming attack pattern. No scripts were extracted, but the document's structure and embedded links are designed to trick users into navigating to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/how-to-get-free-robux-without-download-apps-or-survey-game-hack PDF link annotation
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/game-hunters-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/www-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/wurst-download_GM479516143.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/spin-coin-master_GM406889139.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/win-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.man6-jkt.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-new_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
stream_003_off00004b69.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B69 24348 bytes
SHA-256: 803cff51d8e6d90e3f1ad45d79edf3e989eb5d25e0a9bd3c8119427516e5b6d6
font_01_sfnt_off000082f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F6 19880 bytes
SHA-256: a2325719e7076f7032f87f435cdda87ec67b0b67db20430c9492992df634e2b4

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