Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a233a6f6732dcd…

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 13:52:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ec959fe98aad56f557831327113d9bfd SHA-1: 6be18a560fe50d2fa1c724ccad5b4a6676631ca9 SHA-256: 02a233a6f6732dcdc3de49b18813a97c11d52dc52ed53e5e2bdc4d641d1fb803
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to a known malicious redirector. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting the malicious site. No scripts were extracted, but the primary attack vector appears to be a phishing lure leading to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-2021-game-hack In PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-nike-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/how-to-get-free-robux-quick-and-easy_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-roblox-injectorscom_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-robux-pro_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/how-can-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/view-cam-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/robuxian-robux-hack-prison-klife_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-roblox-unblocked_GM431946152.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
font_00_sfnt_off000033c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33C0 22720 bytes
SHA-256: 200cb7aeffbe4a2122af685e9de94540a0f1511cc44c7cc2f672665edc04b47f
font_01_sfnt_off000066ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66AB 18400 bytes
SHA-256: 0cc69a54ece3ed14f72d45612a229cad946be49a09675100e3633ee455bac280

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