Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a13e44650373cfc…

MALICIOUS

PDF

27.2 KB Created: 2021-06-27 21:02:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e52d990dcd5fac3c37220d386c7066a5 SHA-1: eaa73c110768bf63940680c3e392012a317cc4a6 SHA-256: 2a13e44650373cfcae6012b4164b76ae3efe4eaa79b1606978006ded0a75eb0a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, one of which, http://netcdn.co/app/431946152/free-roblox-intro-template-game-hack, is identified as a malicious redirector. This link is presented as a lure for 'free generators' or 'game hacks', indicating a social engineering tactic to entice users to click. The presence of embedded URLs and the ML classifier flagging the PDF as malicious strongly support this attack pattern. No scripts were extracted, limiting the analysis to the document's embedded links and structure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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 http://netcdn.co/app/431946152/free-roblox-intro-template-game-hack In PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/quiero-ser-hacker-en-roblox_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/roblox-blog-free-robux_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/coin-master-apk-hack-mod-download_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-spin-coin_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/how-to-use-speed-hack-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/roblox-jailbreak-hack-github_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/moonactive-coin-master-free-spins-link_GM406889139.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/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC2 22680 bytes
SHA-256: 1ab6dcfcaa2539c5f9566c6c40c2624d74e9d775bad8be3aa613eb8da6ee786b

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