Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c2bdd07f2cbdc2d…

MALICIOUS

PDF

48.3 KB Created: 2021-06-04 01:15:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 544f5975ee59c175caf53b9cbfea973a SHA-1: f22ec4b25f9b8894567960bb08d5056542d66be6 SHA-256: 6c2bdd07f2cbdc2dbdc66bd15dca67f56f5f8cdcb909aa0c0f53a2630f9cec8f
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 0.9796

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 https://netcdn.online/app/431946152/i-want-free-robux-game-hack PDF link annotation
    • http://library.stieyapan.ac.id//repository/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/robux-best_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.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_off000051a8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51A8 26572 bytes
SHA-256: 724f8162d44afc92b8b5dd77777242b7f861407c488d4256235a24380ef1f6ce
font_01_sfnt_off00008c77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C77 3884 bytes
SHA-256: 64ea6bfd232c3abde76d8b86727203bfa3f935a5783cd0c1f642cf6d3fb42b29
font_02_sfnt_off0000991f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x991F 18544 bytes
SHA-256: 21c84a9f4ed3b5496a815e3404d7d5cd07faeb2ee17584cb0226aa903f450845

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