Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd9254d96de89c63…

MALICIOUS

PDF

35.5 KB Created: 2021-07-09 17:39:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 726fd820c93eff81d8abd368028703e5 SHA-1: 715cda5dee115cfdad51bb4e57e792421fc5526f SHA-256: bd9254d96de89c6368eefde4cb9a0612766dda76ab0e0e2fb863862995187361
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generators' and 'hacks' for popular games. The document body and embedded URLs strongly suggest a lure for users seeking in-game advantages, which ultimately leads to potentially harmful sites. No scripts were extracted, but the primary attack vector is the redirection to malicious URLs.

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-download-app-game-hack In PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/gift-cards-for-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/roblox-marketplace-free_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/robux-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/free-robux-no-offers-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/exosite-roblox-hack_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/how-to-get-free-stuff-in-catalog-roblox-2021-nick_GM431946152.pdfIn PDF document text
    • http://e-learningman2wonosobo.my.id/__statics/gudangsoal/files/earn-free-robux_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_off000033fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33FA 22584 bytes
SHA-256: 96dfbdd86f377a63e156cac0bd9968122edf51be57f16f1600c1309f66bd70c4
font_01_sfnt_off00006695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6695 18756 bytes
SHA-256: 2166f25561c4373c6e80d06891fd885867d3a729d1a06b695fec64284d0c2295

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