Malicious PDF — malware analysis report

Static analysis result for SHA-256 566bb8bca8e262b1…

MALICIOUS

PDF

37.0 KB Created: 2021-05-23 00:05:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e42842bcd450db0b35d801848b324b25 SHA-1: 67e3b746ce909b30d350c6115a96c2ec2a9be7c4 SHA-256: 566bb8bca8e262b19b2b7bf49da132713fefdead3617db72b7f5f93fb22d2f6b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to external websites, including a primary link to a "game hack" generator. The document body and heuristics indicate a lure for free in-game currency, which is a common social engineering tactic. The presence of embedded URLs and the ML classifier's high confidence score support this assessment. No scripts were extracted, but the document's structure and content strongly suggest it's a phishing or scam document.

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-coins-and-spins-game-hack In PDF document text
    • http://vedrachemicals.ro/images/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • http://vedrachemicals.ro/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.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_off00003214.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3214 30304 bytes
SHA-256: 78335882df8129280429702b8598e6315c756e0a43c21c3063774d26f6214eeb
font_01_sfnt_off00006fde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDE 18060 bytes
SHA-256: f77ee24e01944806ea28e16fd73427a54f7109e241804df06ce657d8c6d11cfb

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