Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d3a1788da1c780d…

MALICIOUS

PDF

35.9 KB Created: 2021-05-10 09:57:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 52b6ebf74cb23f7bf8e9e7a96f93fc80 SHA-1: 1222eeb150687fec0d3ea2d6569f3520c9e985dc SHA-256: 4d3a1788da1c780db274d7eee024763f4eafbf948e53ecb3daa606584253c91f
130 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, masquerading as a game hack generator. The document body also contains a prominent "CLICK HERE TO ACCESS MINECRAFT GENERATOR" call to action, reinforcing the lure. While no scripts were directly extracted, the PDF structure and malicious links suggest an attempt to trick the user into visiting a compromised site, likely to download further malware.

Machine Learning

  • Nyx PDF Classifier clean score 0.0282

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/minecraft-pe-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_003_off00003422.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3422 25056 bytes
SHA-256: 183523e82ffd21ee4fda2a188dd0f6c0244dc2cdd1c404b9d3b0633dfc2af3fd
font_01_sfnt_off00006ca6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA6 17724 bytes
SHA-256: f2c518e24e430f5639c0522049ec6170810629e79e139cf24a514a2af733470f

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