Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0670ac073d5d653…

MALICIOUS

PDF

34.1 KB Created: 2021-06-29 14:19:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0624c9c9a5e0ef28a3ab5ff11003f1da SHA-1: f6b5099669ba79aa12b240a44f8dabbbcf686153 SHA-256: f0670ac073d5d653fa1becc73fe82e6501e75a4c362da34c9ecc726eedd272d2
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/cheat-engine-original-download-roblox-game-hack PDF link annotation
    • http://www.mostraining.co.za/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/youtube-how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/criminal-vs-swat-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-to-noclip-in-roblox-mac-without-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-to-hack-roblox-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/is-jailbreak-detection-proxo-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/roblox-majora-free_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-to-get-free-robux-2021-on-iphone_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/idenity-fraud-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdfIn PDF document text
    • http://www.mostraining.co.za/images/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/roblox-robot-animation-pack-free_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • http://www.mostraining.co.za/images/coin-master-70-spin-link-2021_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
font_00_sfnt_off00002f1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1D 21876 bytes
SHA-256: 7b7075c3bfdf2829bfa15b976833d13ae47f675153c0ff31b337e836987dd601
font_01_sfnt_off00005f28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F28 19380 bytes
SHA-256: 781698fad6e1f5180b1ac4a3e789d3bf5d67831612f346afa320e9a62937041a

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