Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e59c0678a06468e…

MALICIOUS

PDF

34.3 KB Created: 2021-05-25 11:33:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: fb4148f2b13207a8e67ca6e7be442b24 SHA-1: 32dbadb865c08b408eaabbd07faac668db258efc SHA-256: 1e59c0678a06468eb83ba1bfdb04ecfb8203d7a00bb13171e97c6e98300c7545
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains critical heuristic firings indicating it links to known malicious redirector infrastructure, specifically disguised as a free game hack. The embedded URL 'https://netcdn.xyz/app/479516143/is-minecraft-bedrock-edition-free-game-hack' is the primary indicator of this malicious workflow. While no scripts were explicitly extracted, the PDF structure and the nature of the lure suggest it's designed to exploit user interest in free game-related content to redirect them to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier clean score 0.0718

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/is-minecraft-bedrock-edition-free-game-hack In 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_off00002c1b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2C1B 24816 bytes
SHA-256: 1eb9b427dec89ebf1b907e1c86be1552ec562f7357771de2af9794abd9702207
font_01_sfnt_off00006515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6515 18268 bytes
SHA-256: c81a05c902e5b7336ce3afe221fe42e1a1247b419ae57a3dec90c8cc8a9629c1

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