Malicious PDF — malware analysis report

Static analysis result for SHA-256 d66f4c653544d20c…

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 00:10:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0b8b60d61fe7b7d706505448611b020e SHA-1: e60f130dc42782995a582e9166d7d11854dd0619 SHA-256: d66f4c653544d20c78e68d4099797b84f2720e4325a839e35799600dccd6d68b
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/406889139/coin-master-free-spin-link-today-2021-game-hack PDF link annotation
    • http://fobh.net/userfiles/files/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/kostenloser-roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/minecraft-free-education_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/minecraft-free_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/minecraft-tools_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/royale-high-hack-club-roblox_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/roblox-girl_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-roblox-script-executor_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-robux-no-offers-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-spin-link-hack_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_002_off00002f48.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F48 23024 bytes
SHA-256: 881f3e2f3742250237c52486f127ea5014c452298d1c2222a3e7a7f245b52b79
font_01_sfnt_off00006311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6311 19100 bytes
SHA-256: 87948dd456158924639af78db2b6f448ba4bec773812a2cc2fa62bc058a3e5dd

Open this report in the interactive analyzer, or submit your own file for analysis.