Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0a098a58f2eebdf…

MALICIOUS

PDF

35.8 KB Created: 2021-05-12 22:35:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7f08de8afae1b603b0a9719774b44d09 SHA-1: e25c50ae709293e5f0c98155b3651334f050f4b1 SHA-256: e0a098a58f2eebdf04eff4ff2a6cd430824a74bfd56e3305f07bb077229de882
130 Risk Score

Malware Insights

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

The PDF document contains a lure for a 'free generator / game hack' which links to known malicious redirector infrastructure. The embedded URL, https://netcdn.xyz/app/479516143/minecraft-free-demo-game-hack, is identified as malicious. The document body also contains text and links related to this lure, suggesting an attempt to trick the user into visiting a malicious site, likely to download further malware or exploit a vulnerability.

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-free-demo-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_off000033a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33A0 24712 bytes
SHA-256: d695161d16c7ae4389c2f8c2e040ce1f8e40ed1a744903a02459fe3ba4ef8cfe
font_01_sfnt_off00006b1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1C 18140 bytes
SHA-256: 0536168ac90d64eb009e64b37040528b80b37c7a826300234d0294943182c78a

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