Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b20b30aeda90900…

MALICIOUS

PDF

28.4 KB Created: 2021-07-19 06:11:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3ab884fbf6e672f925677f5eec0a9a8d SHA-1: 89567cfbba0db2b5013e0c16722edb2a914912fe SHA-256: 5b20b30aeda90900c9e00d5dddb70e8f5a6570f25922ef645ab8057fb0ddc087
138 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains heuristics indicating it's a lure for game hacks and links to a known malicious redirector. The document body, though partially garbled, contains text related to 'Minecraft Svg Free' and 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', reinforcing the lure. The primary IOC is the malicious redirector URL, which is likely used to deliver a secondary payload or lead the user to a phishing site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0329

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/minecraft-svg-free-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_off00001e87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E87 21764 bytes
SHA-256: e8e706d39f931731fe446f8c1437365b49df0f2a7d9acc51e63eff4efc700d4d
font_01_sfnt_off00004e4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E4A 17968 bytes
SHA-256: f82c060a5662ddcca675aec0cfac04b32032cde6baf3a8524f802f6fcb7e6d40