Malicious PDF — malware analysis report

Static analysis result for SHA-256 941188e783a85284…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 04:41:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c433508625dd69edae5110067f39e537 SHA-1: 115c8c9fda33d1028842220c71775a41b1f565b1 SHA-256: 941188e783a8528474a9f84e71eafeaa094209ed41ecadbef4065e656e9d6d81
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-fan-page-giveaway-game-hack PDF link annotation
    • http://www.elibrary.fl.unud.ac.id/repository/roblox-generator-com_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/roblox-free-catalog-items-blogspot-com_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/worst-client_GM479516143.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/robux-survey_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/roblox-vehicle-simulator-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/offers-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/vehicle-speed-with-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/how-to-wall-hack-in-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/earn-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/roblox-how-to-make-a-tshirt-free_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/roblox-jailbreak-hacks-mobile_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/how-to-get-a-hack-script-in-roblox_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_off0000305e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x305E 23096 bytes
SHA-256: ccdcba238ce7136e38550e96c7698298604c69f2a3548b996d945289d50b1e91
font_01_sfnt_off00006410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6410 18608 bytes
SHA-256: 1729869f62bf605446ac18fa88fd71300f8badfb5eb5e4d6b045fb0d814fd4de

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