Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec6b7ca2fc784301…

MALICIOUS

PDF

42.6 KB Created: 2021-06-04 02:26:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 2df6182a86724a0133001105a74fa128 SHA-1: 6393a7658f363953422d2c348ee13a5e2afd5bb8 SHA-256: ec6b7ca2fc78430132a09ffbf0826d0994d1ce373c857f0f365108fd63e5430a
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 0.9874

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.online/app/406889139/coin-master-hack-ios-2021-game-hack PDF link annotation
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/hack-coin-master-for-android_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-18_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
stream_004_off00004cc1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CC1 24220 bytes
SHA-256: b8eddf8c07dd0476b3bc76a07ec8c4f5a77366259550db83c9183ad9d3fd1460
font_01_sfnt_off000083f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F4 18116 bytes
SHA-256: 663054a01704a270a88e5c65db4cbe82af3fd3dd58587b1cb05b092ffe619ba9

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