Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6607e6b7eb3e54c…

MALICIOUS

PDF

35.0 KB Created: 2021-07-19 03:50:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 4a34a664cb0f5005ebd4ca212eeffd6f SHA-1: d2716a0c449a2feedc73aa660e91050289c12189 SHA-256: b6607e6b7eb3e54c527147c42a45d17fd96f1c2af394f3bb5f98c00ff1784c2f
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game hacks and generators to entice users to click on embedded links. The primary link, http://netcdn.tw/app/479516143/real-minecraft-for-free-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a workflow designed to lead the user to a malicious site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/real-minecraft-for-free-game-hack In PDF document text
    • http://tc-kulmbach.de/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://tc-kulmbach.de/images/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • http://tc-kulmbach.de/images/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://tc-kulmbach.de/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://tc-kulmbach.de/images/free-tiktok-followers-and-likes_GM835599320.pdfIn PDF document text
    • http://tc-kulmbach.de/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://tc-kulmbach.de/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://tc-kulmbach.de/images/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://tc-kulmbach.de/images/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://tc-kulmbach.de/images/free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34EA 22896 bytes
SHA-256: b0ad141c92a8ce14da6c5dd196aeac8c565ecc7295e4502900de324908c1b2a1
font_01_sfnt_off0000686e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x686E 17784 bytes
SHA-256: d9b0d0c4c4ee4a540b7fb0061982a790ffe87580883f4fb909ed1eb0697febb4

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