Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d9d4870230e27e…

MALICIOUS

PDF

37.3 KB Created: 2021-05-12 04:17:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d9b27ceb9ad0de95eacb8f1787e5962a SHA-1: b8b26c8c1ac7253f29b95137989b1798f238b142 SHA-256: 30d9d4870230e27ed8645335e8db4b54578b79015f610b7dfd4d0520f7288342
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing for a game hack redirect lure, pointing to known malicious infrastructure. The embedded URL and the document body text both reinforce this lure, attempting to entice the user to click through to a potentially harmful site. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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/431946152/free-star-codes-roblox-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
font_00_sfnt_off00003663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3663 25580 bytes
SHA-256: ae9aed512c5046f7b5e9a694ec7109f204990c59a8fe43875e1357a2e151d884
font_01_sfnt_off00006fe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE1 18456 bytes
SHA-256: e0fd33c50d9e2ad93d9aab52f856c44adae9b6ad9d7cb110af9757aef404b6ba

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