Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba67edb07e93048c…

MALICIOUS

PDF

36.3 KB Created: 2021-07-06 12:42:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ab96bc13e92eb97e7ce19dfb72e786f1 SHA-1: 6b98935dd3304824c7d1ab576e9ce04f1ce4eee1 SHA-256: ba67edb07e93048ce449c874a64bf6c461b2643bd8ae5f406064894905a38734
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic firing for a game hack redirect lure, pointing to a URL that promises free spins for Coin Master. The document body also contains this URL and other similar game-related links, reinforcing the lure. While no scripts were extracted, the presence of embedded URLs and the nature of the lure suggest the document is designed to trick users into visiting a potentially malicious site.

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.tw/app/406889139/coin-master-free-spins-2021-app-download-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/minecraft-handbook_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-yeyeyeyyeye_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-obc-thumbnail-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-spin-ml_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/como-conseguir-robux-sin-hacks_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/mac-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-free-abs-t-shirt_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/comment-hacker-un-compte-roblox-2021-fr_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hacking-brotherss-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-codes-without-human-verification_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-op-boku-no-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-use-free-models-in-roblox-studio_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-robux-no-human-verification-no-download_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-hack-2021-december_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
stream_002_off000033d7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33D7 23352 bytes
SHA-256: bfc241ff56faa687a64053ab04444600e73b27975c6aa463cc4c0dfcbae4daf3
font_01_sfnt_off00006897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6897 19156 bytes
SHA-256: 610ae378c9cc4c83123dbbc111aaf327ebb15e20175b345a881081f690b9164c

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