Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebce0415e36bda9d…

MALICIOUS

PDF

50.1 KB Created: 2021-05-11 22:31:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 36204d5509fb9222b0850e06ba5ad6a4 SHA-1: d4beed977e599bc7f8320a34a1b71e19b034e44c SHA-256: ebce0415e36bda9deec259d58f074f575f2e81ae94f17ac5ea482ba0015d6faf
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 0.8594

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/406889139/coin-master-daily-free-spins-link-today-blog-game-hack PDF link annotation
    • http://mohacad.com/images/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://mohacad.com/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://mohacad.com/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/coin-master-spin-link-free-download_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/robux-match_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://mohacad.com/images/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • http://mohacad.com/images/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://mohacad.com/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://mohacad.com/images/coinmasterfree_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d0d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D0D 25200 bytes
SHA-256: 38d81a3edf8c623a837b5bb1a0fb2600119f6cc36d56d99b1bf7c4cdb6af8feb
font_01_sfnt_off000086e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86E4 4028 bytes
SHA-256: a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91
font_02_sfnt_off00009485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9485 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00009e75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E75 19156 bytes
SHA-256: c6e44e2d9e69c9765448dadb9ef0e8fe599e3907f261bb989cdf753410e037ff

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