Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb2cd32c701fc051…

MALICIOUS

PDF

36.9 KB Created: 2021-05-23 00:05:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5a2d944bfc3ff268bfea26539e56e36b SHA-1: 5301cdb0ca6db7afa4efce2ec48ec52f48b1e4c6 SHA-256: cb2cd32c701fc05150c4d0e53d104dcfa45a957ee3c17ab74076006aadfda6eb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as 'game hacks' or 'free spins'. The document body and embedded links suggest a lure for users to click through to potentially malicious websites. No scripts were extracted, but the presence of multiple malicious URLs indicates a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/406889139/coin-master-free-spins-2021-game-hack In PDF document text
    • http://waldkindergarten-abensberg.de/images/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/coin-master-free-spins-link-hack_GM406889139.pdfIn 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_002_off000034a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34A3 25296 bytes
SHA-256: 422c1de4b2ef20d2b1f4c81ad84f0bf69ce1fd5b6f2cdd71312657559d7448dd
font_01_sfnt_off00006f01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F01 18288 bytes
SHA-256: 9f7609fba99e53c6baa99bb04d1c7e3f9b7167131c1520eb2a413cdab4a14871

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