Malicious PDF — malware analysis report

Static analysis result for SHA-256 26b5397ea074d447…

MALICIOUS

PDF

38.0 KB Created: 2021-05-25 07:41:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5a307302af03c91a8092603c2062c28a SHA-1: 601ea525081d163366395f999788c2045b0ad331 SHA-256: 26b5397ea074d44742b147cfdd31bc78a2e816e1cebcc72875d906fccad9edb2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to a malicious domain, masquerading as a "free generator / game hack". The presence of a "download button" lure and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document structure and embedded URLs strongly suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

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/835599320/free-tiktok-hearts-game-hack In PDF document text
    • https://www.gornjastubica.hr/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/coin-master-free-coins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003288.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3288 24956 bytes
SHA-256: 72006217ee46857440296f17ac425c2307553df8b6dbd980f0bd1c0ce2246acd
font_01_sfnt_off00006a95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A95 2888 bytes
SHA-256: 2f5f0fc0bc2e44a39e81df338c202d2aa9228409b57f32fbedd5805dc83e19fa
font_02_sfnt_off00007486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7486 17684 bytes
SHA-256: d2d02d8ba990aafabbf3c8139bcf1f40ce6ab80109d0e8cf226d19766131c391

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