Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a0987c051b21fe2…

MALICIOUS

PDF

38.3 KB Created: 2021-05-18 01:40:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 01a788bef616751b8e41519183141e05 SHA-1: e25e0e77bb8eba4f1da0fec74144cbeeeb217260 SHA-256: 0a0987c051b21fe2c93770f57bab72b7603fde5c236627f768e2e491f39b888a
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency, directing users to a known malicious redirector URL. This suggests a phishing or scam attempt designed to lead users to potentially harmful content or further malicious sites. The document body and heuristics indicate a clear intent to deceive users into clicking the provided 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/how-do-you-get-free-robux-without-doing-anything-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_off000033e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33E1 26604 bytes
SHA-256: 4ef41f815e2c27824b0ae4bbcf0f025414177c8002b7fcc009a68c91d6cabeab
font_01_sfnt_off000070b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B6 19564 bytes
SHA-256: f288fbb1ab92d6f8be6652009a81e99b9e02fb437604b8cefd24a0b2528ef73f