Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ba12202b4bc2de1…

MALICIOUS

PDF

35.7 KB Created: 2021-05-14 04:55:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e3901f7d121d5f74bda0b781c6d2d195 SHA-1: a8f1a11178b181f2a607881807392fd5b613e6cd SHA-256: 1ba12202b4bc2de1fbe6ab90954e21fb3d961cc8cffdd8fd12e9b290e27327ca
170 Risk Score

Malware Insights

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

The PDF document contains a lure for a 'game hack' and displays a fake CAPTCHA, aiming to trick the user into clicking a malicious link. This link, 'https://netcdn.xyz/app/406889139/coin-master-cheat-to-get-free-spins-game-hack', is identified as a malicious redirector. The document's structure and content suggest an attempt to exploit user engagement for potentially malicious purposes, such as downloading further payloads or redirecting to phishing sites.

Machine Learning

  • Nyx PDF Classifier clean score 0.0265

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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/406889139/coin-master-cheat-to-get-free-spins-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_off00003208.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3208 24692 bytes
SHA-256: 0f49ff95d8f229bc8cf4d5fd26f5569800885c9f28b014de1250898e6759eb46
font_01_sfnt_off00006b05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B05 18052 bytes
SHA-256: 99031f52a6b201c4974ba9c8c658527515774d5dd8e7ce964a5a3577c3d49f57