Malicious PDF — malware analysis report

Static analysis result for SHA-256 88c12e3f001de4dd…

MALICIOUS

PDF

35.1 KB Created: 2021-05-22 03:05:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fd1572b6c136bc819ad7b91fa6f73bbb SHA-1: eba3809436251988a6fc80b5c3946ed28ca3c55f SHA-256: 88c12e3f001de4dd1518bd626aa0fde40eb1124517a117b39dd6a077791c5d23
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures for game-related cheats and accounts. The document body explicitly mentions "Free Minecraft Premium Account" and "MINECRAFT GENERATOR", aiming to trick users into clicking the embedded malicious URLs. While no scripts were explicitly extracted, the PDF structure and heuristics indicate it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9699

Heuristics 3

  • 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.
  • 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-premium-account-game-hack In PDF document text
    • http://muko-unterfranken.info/images/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://muko-unterfranken.info/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://muko-unterfranken.info/images/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://muko-unterfranken.info/images/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://muko-unterfranken.info/images/free-robux-hack_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
stream_002_off00003643.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3643 25568 bytes
SHA-256: 5f712264fb0e09da114e64daa67caa43885c247689209c1ef8372051adcc3662
font_01_sfnt_off00006fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE2 3056 bytes
SHA-256: dd24a0ab94df4552e459bd06fd01b0fd3f021c1d51d1d64407070e735974a028

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