Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a7271378200c06a…

MALICIOUS

PDF

30.2 KB Created: 2021-07-20 11:23:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b95bb547f416e0baa52e559ed544f911 SHA-1: 1ea1bb517bbba939b3047c0673ce9e4dfd4c90e8 SHA-256: 0a7271378200c06a552eff4b8ac936269342e1e2d3fd117e4c46ed990fce4383
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free generator / game hack' which links to known malicious redirector infrastructure. The embedded URL 'http://netcdn.tw/app/479516143/free-minecraft-games-for-kids-game-hack' is identified as a malicious redirector. The document body also contains similar text and links, reinforcing the social engineering aspect of the attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0560

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 http://netcdn.tw/app/479516143/free-minecraft-games-for-kids-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_off00002233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2233 22696 bytes
SHA-256: 6bbe116a6ea01227b97ab7253d3277fe1ad271b62cc5b4dcf83f0ada3ea84f8b
font_01_sfnt_off000054ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54EC 18144 bytes
SHA-256: 13e7e5cd67c7f2718453187682e852ca38f83a1f5fffd311a8da849f95858a3e