Malicious PDF — malware analysis report

Static analysis result for SHA-256 587fd7c07c8f4f3f…

MALICIOUS

PDF

33.7 KB Created: 2021-07-21 13:34:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 301b0f5edc29cf701bc9cba3ec5459fc SHA-1: 5aee67e7558240aa18c5099f55ecdfef7304736d SHA-256: 587fd7c07c8f4f3fbc39ee2faade97797b5238ca991d888030f6a9ad55a87824
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a primary link to 'netcdn.tw' which is flagged as a malicious redirector. The document body text and heuristics indicate a lure for 'game hacks' or 'generators', suggesting a phishing or scam attempt. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure strongly suggest a malicious intent to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/479516143/minecraft-java-edition-free-download-game-hack In PDF document text
    • http://demenagementlandry.com/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://demenagementlandry.com/images/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://demenagementlandry.com/images/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://demenagementlandry.com/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://demenagementlandry.com/images/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • http://demenagementlandry.com/images/rblx-city-free-robux_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
font_00_sfnt_off00002e9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E9E 22508 bytes
SHA-256: ffdfcf2be260225ebad24b9bfd229a997f9d65f954c5167a2fb9baa7e0e1ec00
font_01_sfnt_off000060bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BC 18572 bytes
SHA-256: be0be2e0bd1478f571662982334261f36152068b9a395b749ff064ff651796b1

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