Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba2c06bb96f7429a…

MALICIOUS

PDF

47.6 KB Created: 2021-06-03 06:31:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 8b99f93255b61dd63898eb736e15f5c4 SHA-1: df266a9674758de35bcba2d5a311d38211148e6b SHA-256: ba2c06bb96f7429ac79d6b8ff6cee223f1afffdfe4a3683519b3f2d187d511bc
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 0.9769

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/431946152/free-robux-on-phone-game-hack PDF link annotation
    • http://digilib.unla.ac.id/repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master--hack_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-ios-hack_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5160 26104 bytes
SHA-256: 84fed773c1aeb4c33124f2d0a11d7d6432e6ed375a88ad9847d904282529dde9
font_01_sfnt_off00008d3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3A 2908 bytes
SHA-256: 5879c26d32e0ab4faed3d680263fa74cc266a38abde1d6ee4d56808f786447fc
font_02_sfnt_off00009734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9734 18332 bytes
SHA-256: a8c9403bd24fc6ffbb74b72c8864e8746fc5e9ab0f3a7e731dec7195ce2a3638

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