Malicious PDF — malware analysis report

Static analysis result for SHA-256 49e5023d129cecac…

MALICIOUS

PDF

43.9 KB Created: 2021-05-16 02:34:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c1dd5cac94abbbf884b53e13711ac454 SHA-1: 173a67698e0bedc9d78503c3c1d0eb02e339896f SHA-256: 49e5023d129cecac301d2011a89faceedf954447bf7d0e03c496d6a168aea972
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure. The embedded URL, https://netcdn.xyz/app/406889139/coin-master-free-coins-2021-game-hack, directly supports this finding. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt, likely intended to redirect users to malicious sites or initiate downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-free-coins-2021-game-hack PDF link annotation
    • http://gvtssp.org/images/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://gvtssp.org/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://gvtssp.org/images/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • http://gvtssp.org/images/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://gvtssp.org/images/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://gvtssp.org/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://gvtssp.org/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://gvtssp.org/images/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • http://gvtssp.org/images/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://gvtssp.org/images/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • http://gvtssp.org/images/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • http://gvtssp.org/images/coin-master-free-spins-whatsapp-link_GM406889139.pdfIn PDF document text
    • http://gvtssp.org/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://gvtssp.org/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://gvtssp.org/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://gvtssp.org/images/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://gvtssp.org/images/vip-roblox-free_GM431946152.pdfIn PDF document text
    • http://gvtssp.org/images/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • http://gvtssp.org/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://gvtssp.org/images/free-robux-ad_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_003_off0000475b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x475B 24868 bytes
SHA-256: df02c0116b34fac970826a24fc89b933736c875997acb5e9b82ef6d8b0893e29
font_01_sfnt_off00007f50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F50 2936 bytes
SHA-256: b65a20734ef06029d6740e950bd83656aed1dbf3c01662a457fbb4c2cfc2f3a1
font_02_sfnt_off0000896e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x896E 18112 bytes
SHA-256: d3290bf375094f68ca2c73f068de3958d05aa7629a05aa779b6fc584462feea2

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