Malicious PDF — malware analysis report

Static analysis result for SHA-256 3646dbf6d2b386fa…

MALICIOUS

PDF

41.8 KB Created: 2021-05-21 09:04:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9cef581c4930d20770c06f3aff7261cf SHA-1: ead5f3a77f88ce4536fbb9f0ed0290935e714542 SHA-256: 3646dbf6d2b386faf3c813d09e62246ed7005bb36e48437a1f3dc617bc7263c4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to game hacks and free spins, directing users to a known malicious redirector. The document body contains multiple URLs that appear to be related to similar scams, suggesting a phishing or social engineering campaign. The presence of embedded URLs and the nature of the lure indicate a likely attempt to trick users into visiting malicious sites, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7589

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-today-daily-links-game-hack In PDF document text
    • http://denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-tiktok-fans-without-human-verification_GM835599320.pdfIn PDF document text
    • http://www.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://www.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-mod-apk-unlimited-spin-download_GM406889139.pdfIn PDF document text
    • http://www.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-pe-apk_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
font_00_sfnt_off00003861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3861 27544 bytes
SHA-256: 7c8f735390e4defb6d9cfaa936681f64aa38599d8b320fb9f2275d1244e780ad
font_01_sfnt_off0000744e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x744E 2920 bytes
SHA-256: 601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7
font_02_sfnt_off00007e67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E67 19552 bytes
SHA-256: f959f385e47795d179dfa97d1de9392f16ef89b68e03730d0d1f02416fc9b498

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