Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b39f617aea1e0e5…

MALICIOUS

PDF

33.9 KB Created: 2021-06-26 23:01:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6e7062c7a8033f690e97b1cd8b15451e SHA-1: a8d8fd9aa8729cfa893c3ab40687cbd31b4c6391 SHA-256: 7b39f617aea1e0e5efc763a5d8acb3638b522d5bd4f70fe6e04ccf5e133b585c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising free game hacks and items for popular games like Roblox. The document body and extracted URLs indicate a lure for users seeking cheats or in-game currency, which is a common tactic for distributing malware or conducting phishing. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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/packet-of-world-free-roblox-game-hack In PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/robux-survey_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/how-to-get-free-obc-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/roblox-gui-hack-script_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-robux-codes-2021-august_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-robux-obby_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/roblox-ff-hack_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/synapse-free-roblox_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/free-jeans-roblox_GM431946152.pdfIn PDF document text
    • https://e-learningmin19jkt.com/__statics/gudangsoal/files/is-roblox-studio-free_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_off00002ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE6 21624 bytes
SHA-256: deb0e4baa75e5906f5adea7f565df53a7510ce75c93570eac2724e963db29416
font_01_sfnt_off00005e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E40 19448 bytes
SHA-256: b6946040f0bb7a641f33b13f3c4aa99121e2759b98066cae1aa766ce068448e1

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