Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e8dd1f32a01bcd0…

MALICIOUS

PDF

34.8 KB Created: 2021-06-19 15:37:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7161bdf408a2962bb74006c107c2f3f4 SHA-1: a3be3cdf58dfeec342dc2ed2c39c54dea8821426 SHA-256: 1e8dd1f32a01bcd04778c74c0379bb098213ced64c2016c02cb9d1def8f7f891
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link and text related to 'game hack' and 'free generator' lures, specifically mentioning 'Contrasea De Roblox Hack Tool'. This strongly suggests a social engineering tactic to trick users into clicking the embedded URL. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the primary attack vector appears to be a phishing lure leading to a potentially malicious external resource.

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/contrasea-de-roblox-hack-tool-game-hack PDF link annotation
    • http://digilib.iailm.ac.id//repository/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/wizard-hacks_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/inject-hack-com-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/wurst-hacks_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/pokemon-go-free-event-box-april-2021_GM1094591345.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-gift-robux-on-mobile_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_off000031d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D2 22208 bytes
SHA-256: da7807fbda8b4c26014d71d1bc413df5537c14938a5608ee3b13368c31c4eb32
font_01_sfnt_off0000632f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632F 18928 bytes
SHA-256: 6810a2499557d41bc0b6f962e6629f2fc5384294bdee19eb177f84d02d5e96e8

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