Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcabf5ea86141496…

MALICIOUS

PDF

41.6 KB Created: 2021-05-11 03:07:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5a526ff2ce16249b079d874c831513be SHA-1: 0964ee17d018f4df174bcbe187b2219986929973 SHA-256: dcabf5ea86141496422d8d04561410577f645437d3e8a379097ec4bca82228c8
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 0.9971

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.xyz/app/431946152/roblox-free-clothes-girl-game-hack PDF link annotation
    • https://library.stikesmi.ac.id/repository/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/rbx-website_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/roblox-source_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/minecraft-free-education_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/what-is-wurst_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/minecraft-images-free_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/how-to-find-coin-master-free-spin-link_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_003_off00004741.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4741 24520 bytes
SHA-256: 9e4fefe65606971775042c49a6d1f9ab54015f6ee29e593c5ba439927cac4c2d
font_01_sfnt_off00007fec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FEC 18340 bytes
SHA-256: 43b97e088e2ffab0722e8ce3b94223e5cd299235dccb62a3edb2f682d17634b7

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