Malicious PDF — malware analysis report

Static analysis result for SHA-256 b09cec4695c6bca3…

MALICIOUS

PDF

34.1 KB Created: 2021-06-27 19:25:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: af1350a2ec2a34e16649d25b62a05b58 SHA-1: 2c950a7d5208d16c683c89860e8481dbcfd90d4d SHA-256: b09cec4695c6bca34d776fea260f804d10eaeee9000eaafe468751662ff9e344
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/hacking-tool-roblox-game-hack PDF link annotation
    • http://library.ulb.ac.id//repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-strucid-hit-box-hack-2021-august_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/pokemon-go-free-zekrom_GM1094591345.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/spare-reborn-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/fre-robux-websites_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-hack-youtube_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-synapse-x-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hack-roblox-tools-2021_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_off00002efa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFA 22528 bytes
SHA-256: 6ee8988609070c64a31c756f703b13f2ff9d4af66bd9b1012926a5b82e7617ea
font_01_sfnt_off000060ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60EC 18776 bytes
SHA-256: 7b53f8d9613ee31832a0f2cade4c478a0afd3be8b7c67573cae489f0d8064980

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