Malicious PDF — malware analysis report

Static analysis result for SHA-256 efe2f1db400778ee…

MALICIOUS

PDF

46.8 KB Created: 2021-06-03 12:17:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: fd7cd89502ce22721f297ddfa1ff4ff7 SHA-1: 45ea759e456a757b68e8371518dfeef6697bd195 SHA-256: efe2f1db400778ee403ac4ff37242c9c80df8919ebb352e158ce224749573937
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 0.9832

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/apps-to-get-free-robux-game-hack PDF link annotation
    • http://lib3tell.stptrisakti.net/repository/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/robux-without-verification_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/roblox-imagine_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/coin-master-daily-spin-link_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/vip-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-free-coins-and-spins-group_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/free-spins-coin-master_GM406889139.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
stream_004_off00004fb7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FB7 29944 bytes
SHA-256: 5b5103466fa9ecd95bad85ea4c35c0d88117e4152fcc3210ee23f0acfc4c3872
font_01_sfnt_off0000945e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x945E 18292 bytes
SHA-256: b4e5860ebf2343f9b18b94d86a305cbc7e8ebd2f2a6bfe7ceeed88b67548d8bf

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