Malicious PDF — malware analysis report

Static analysis result for SHA-256 150d721abcfd2cf9…

MALICIOUS

PDF

38.1 KB Created: 2021-05-24 11:03:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 110f4568853dcacc3c96f958b6631a60 SHA-1: 9b05f1c01ad179e9039deaf0c9a28b4072685d7a SHA-256: 150d721abcfd2cf9cdaff066a661b5b2a48fc4bcd9ba7ba4d7d97f88c3931012
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 0.7010

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/835599320/tiktok-followers-for-free-game-hack PDF link annotation
    • http://meisterhaus-guterl.de/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/how-to-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://meisterhaus-guterl.de/images/how-to-get-free-clothing-on-roblox_GM431946152.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_002_off00003267.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3267 24648 bytes
SHA-256: edca865d9350fc8426c3dd8d005dfa26c6d0dc1339d8311ac1229a409c1e4572
font_01_sfnt_off00006af6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF6 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00007505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7505 17692 bytes
SHA-256: 1b1e1c30a9592b0fb91196253d93c27419259905b41c1e14a3654a7d7056ebb4

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