Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a13bde377c83844…

MALICIOUS

PDF

38.7 KB Created: 2021-05-21 10:40:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4c51967f6080d63d0d4bb355fa9f1671 SHA-1: 0042a53a808a475f09cdd11fa0c1d54619bc7858 SHA-256: 0a13bde377c83844b538f09d990e5725bcc85e4c8a6e624bf79972700df5bbd9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of free items like Minecraft server hosting or Robux. The document body explicitly contains the URL 'https://netcdn.xyz/app/479516143/free-minecraft-bedrock-server-hosting-game-hack' and other suspicious links, indicating a phishing or scam attempt. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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 https://netcdn.xyz/app/479516143/free-minecraft-bedrock-server-hosting-game-hack In PDF document text
    • http://jdlwealth.com/images/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/coin-master-daily-spin-link_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://discord.ggIn 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_off000033b1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33B1 24260 bytes
SHA-256: 0e1d5b9ebe58685e594f81f5c75379e13167bf711eead2c90b5e5b99606859d6
font_01_sfnt_off00006afe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFE 2824 bytes
SHA-256: 61b3a573627d4f03d30684157e1627da3b4499cefab0fdf17b45999135b0250b
font_02_sfnt_off000074a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74A4 18672 bytes
SHA-256: fcf161d812b4feaa3e2bf8e8c417d8656b3909a46e27a4c0a1d90eda073f6fc6

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