Malicious PDF — malware analysis report

Static analysis result for SHA-256 f395c84b0b88ccc9…

MALICIOUS

PDF

34.9 KB Created: 2021-06-25 23:45:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: bcb48889db2d7279401f7fa0c7e44bbe SHA-1: abc5e8e3018c263ada9e4db59f3eaf68fda86b1e SHA-256: f395c84b0b88ccc93006bfce6d11c95061cd579bd18c6981133e1f52d63c14d3
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/roblox-game-cheat-codes-game-hack PDF link annotation
    • http://www.perpusffup.or.id/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/download-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-deals_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-get-free-robux-no-verification-on-ipad_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-minecraft-packs_GM479516143.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_off0000309d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309D 22452 bytes
SHA-256: a5f5658a0563e9a61183d29104380a68a020c0b01e585ca64c044b6f1114e8b0
font_01_sfnt_off000062b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B0 19188 bytes
SHA-256: 98be09b9f7e70301d075e3a9eedc6cbd92dadf637b979ec01997ed696d30f759

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