Malicious PDF — malware analysis report

Static analysis result for SHA-256 728ae971a0d6787e…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 15:34:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 81ca311e83a4bde5301741896a5bb5ec SHA-1: 450e365a9c28ae5068c49e314ea1a83b3282f817 SHA-256: 728ae971a0d6787e5352fac234b6c87cdbe0d17eafe7b4224dec01cd7d862aad
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/431946152/roblox-shirt-template-free-game-hack PDF link annotation
    • https://library.sman1berau.sch.id/repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-shinobi-story-cheat-script_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/toolbox-mod_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/withdraw-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/script-roblox-pet-simulator-hack_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/talk-other-player-roblox-gui-hack_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/hacks-para-roblox-descargar-jailbreak_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/114-4-hacks_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/best-jailbreak-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-roblox-well_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-no-verification-at-all_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_off00002f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6F 22364 bytes
SHA-256: 683a56d67a8c95be4c9840395d5cd19eb7be5b5527243585f279d24c9027bba0
font_01_sfnt_off000060dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DC 19476 bytes
SHA-256: 39f31297814331a53f6b553485ee4f398b4780561fca342eeeaa3a41f125c1d6

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