Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc8962bfb86a34b1…

MALICIOUS

PDF

35.9 KB Created: 2021-07-03 20:57:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: f9996ed10ea19dd0963a134d5881e3a7 SHA-1: 0122d183488ce7749477a8935e44d648efcb6c59 SHA-256: dc8962bfb86a34b11d9aa18be54320e6a77c6941fa0b869ee4c3bb628753964d
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/free-robux-clothes-game-hack PDF link annotation
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-robux-no-typing-stuff_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/5-hacks-in-roblox-games_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-robux-hack-download-2021_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/minecraft-free-education_GM479516143.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/roblox-character-free_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/hacks-for-roblox-prison-life-v2-02_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-shirt-roblox-pastebin_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/coin-master-hack-xyz-2021_GM406889139.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off0000354b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x354B 22584 bytes
SHA-256: 62adbd856c796f91cd3473b43f1ae606a2ba2703eff78b8b7966255110c5d530
font_01_sfnt_off00006789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6789 19060 bytes
SHA-256: 97364360b0ef57788754a1eb8a616304bf845de832d3f27808b1c0193cfeafc1

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