Malicious PDF — malware analysis report

Static analysis result for SHA-256 9937a2805694ab93…

MALICIOUS

PDF

36.4 KB Created: 2021-05-21 07:51:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 548ff50cd92c2b162018017f4dc1447e SHA-1: dbc73363ae61936a31799fb5bb740bc00c3de472 SHA-256: 9937a2805694ab93b34595ded0e95332e6e0e38247ce9a0132900a37eae24841
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The document body and embedded links suggest an attempt to trick users into visiting malicious websites, likely to download further malware or engage in phishing. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/479516143/cool-minecraft-hacks-game-hack In PDF document text
    • http://bogatyr.com/images/pubg-uc-online_GM1330123889.pdfIn PDF document text
    • http://bogatyr.com/images/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/best-minecraft-hacked-client-2021_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_off000035b4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35B4 25220 bytes
SHA-256: 7d4dcd78767c3142e038e1cc0de5e68990fc1609b140ab00cda1290450f445ae
font_01_sfnt_off00006e1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1D 17956 bytes
SHA-256: 052a8056d5e76bd054e8f6de415126dc7fc526d2c477c3dbde74b8be28c4271b

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