Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcdf39d7c8975c6c…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 15:15:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 863c759c0b60514ecf927f10410ffd1d SHA-1: e49bdfd8dd50a7bf2c889ca15098fd05ece14b93 SHA-256: bcdf39d7c8975c6c9166c0e30cedaae67de4ca7bc8490ef8751b329ead84cb95
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/431946152/how-to-hack-and-get-free-robux-game-hack PDF link annotation
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/free-spin-coin_GM406889139.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/roblox-unlimited-free-robux-and-builders-club_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/robux-website_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/how-to-get-free-robux-and-obc-pastebin_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/free-roblox-item-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/free-girl-shirts-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/free-roblox-accounts-with-robux-2021-november_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/free-minecraft-account-reddit_GM479516143.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-learningman18jakarta.com/__statics/gudangsoal/files/wahoogaming-co-free-robux_GM431946152.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_off00002ff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF4 22432 bytes
SHA-256: a08a4817acd6210b88b82496d057a11ea53c48e7d46af8ebf7f97bf80f526eba
font_01_sfnt_off000061c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C6 19328 bytes
SHA-256: 38bb1ef0d1232593bc33faeb07ab7c9da97d5775ca686b5d0190a8681bcdbe68

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