Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc680d5f37e0a49…

MALICIOUS

PDF

48.0 KB Created: 2021-06-04 00:37:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: e40018b61138b86c0b805faacf2265eb SHA-1: 814e0ff4813e783c3289722425356e05350cc715 SHA-256: 3bc680d5f37e0a49eb16f36d3b47a7980bcf9b4cfdc461a83140462c0a65c1c9
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 3

  • 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.
  • 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 https://netcdn.online/app/431946152/free-robux-codes-no-verification-2021-game-hack PDF link annotation
    • http://lib.fekon.untad.ac.id/repository/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/pokemon-go-free-games-online_GM1094591345.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-link-facebook_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/corn-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-mod_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005129.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5129 26688 bytes
SHA-256: c722fc31054a29f711599a50e0411d4c61bd9bdc9e5cc14fbde0ef3fdcf1c0c2
font_01_sfnt_off00008cd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD1 3884 bytes
SHA-256: 64ea6bfd232c3abde76d8b86727203bfa3f935a5783cd0c1f642cf6d3fb42b29
font_02_sfnt_off00009974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9974 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5

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