Malicious PDF — malware analysis report

Static analysis result for SHA-256 310414ec22a471ed…

MALICIOUS

PDF

35.4 KB Created: 2021-06-19 17:02:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b6457bcd9cdb6fbba61ff3944e9d3e03 SHA-1: 1600a074e1786174e6af65413717ec3dd3fc09dc SHA-256: 310414ec22a471ed94eaafad5f91756f5c05310c2b7b94679b03a4190e222b6e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a document body that attempts to lure users into clicking links related to game hacks and free trials. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple external URIs suggests a download or redirection attempt. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate a potential for malicious content delivery.

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.co/app/431946152/is-there-a-free-trial-for-roblox-bc-game-hack In PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/free-roblox-acc_GM431946152.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/get-free-coin-master_GM406889139.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/free-robux-master_GM431946152.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/roblox-admin-hack-script-2021_GM431946152.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/robux-redeem-code-hack_GM431946152.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/how-to-get-free-stuff-in-the-catalog-on-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B3 22708 bytes
SHA-256: a5a5404a7b02395dc8a8eb6fb93a332d1a4ea4f75d76fb4e60b48023116e9f78
font_01_sfnt_off000065df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DF 18936 bytes
SHA-256: 077c8f5d1ca1e30cc185553d60a9afed0320c7b1a56e7c0ac237172e601f95df

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