Malicious PDF — malware analysis report

Static analysis result for SHA-256 54397265b49a6e60…

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 05:04:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 97d6cf7928a75e1d867ad469950de300 SHA-1: 032648eb93ab597e582b7add3180ff9f3fec3be1 SHA-256: 54397265b49a6e60eddc2ba8fa05d344ac98deccf851e07564057c63f39e4377
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a call-to-action phrase, strongly suggesting a phishing or scam attempt. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate an attempt to redirect the user to malicious websites, likely for credential harvesting or to deliver further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/406889139/how-to-get-free-spins-on-coin-master-2021-game-hack In PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/collect-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/earn-robux-now_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-person_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-and-coins-generator_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/microsoft-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
stream_004_off00004ff8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FF8 26380 bytes
SHA-256: 63b33fcb6145112c10b8e35de8e4bf50e51f097e1dc9d08ed918bab557d07254
font_01_sfnt_off00008c53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C53 18452 bytes
SHA-256: 240b90d3225a309efd4f22f05c72cc9c47fc9cdac152c3e16e2e4001354cf22f

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