Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ace0be13ff4e05…

MALICIOUS

PDF

35.0 KB Created: 2021-07-03 21:16:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: cb2a40a3c9796d46691997b0f69ef7e6 SHA-1: 1d1ac563c69ac76b5f12fea65d75f5f8cb292a38 SHA-256: 68ace0be13ff4e0583484ede8e1c350ae2b17ac7e56420cf0adf2998baca5c73
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-pink-free-robux-game-hack PDF link annotation
    • http://smkn1salatiga.sch.id/library/repository/free-roblox-bot-followers_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-roblox-condo_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/fight-club-roblox-hacking_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-robux-promo-codes-legal_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/cheat-code-sonic-new-map-roblox_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-noclip-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-sdcript-executer-for-roblox_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-free-robux-codes-that-work_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/button-clicker-for-free-robux_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/bloxburg-us-free-robux_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-robux-cheat-engne-address_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/best-free-roblox-tycoons_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/nuevo-hack-generador-de-robux-de-roblox-by-pignolise_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_off000031a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A5 22244 bytes
SHA-256: ee35d7a427a43e6c2c375939bcf8ae7710461fdf49de5bd26e8c02d16bc4e685
font_01_sfnt_off00006348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6348 19236 bytes
SHA-256: 7f3ae533f1b20c2c9ad227d8ec2a812f6ca4ef2a098c849ad4932b76dc1c09fe

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