Malicious PDF — malware analysis report

Static analysis result for SHA-256 185900f2dddf8c16…

MALICIOUS

PDF

15.6 KB Created: 2021-05-22 02:39:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fb186322962f29cd6836f860e06c1022 SHA-1: 73ba981d9deb0508ba2cd01869801a8aed58dd75 SHA-256: 185900f2dddf8c160f448007abe6b4a30bf65399731201f1d62ef4bb05ce245f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, one of which is identified as a malicious redirector leading to a 'free generator / game hack' lure. The document body and embedded links suggest a social engineering tactic to trick users into visiting potentially harmful websites. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9063

Heuristics 3

  • 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.
  • 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/how-to-make-a-minecraft-server-for-free-game-hack In PDF document text
    • https://www.gornjastubica.hr/files/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/roblox-website-robux_GM431946152.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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