Malicious PDF — malware analysis report

Static analysis result for SHA-256 478c003eb1a7f89f…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 15:22:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3dc338df7da2cbc95104cabc7a917edf SHA-1: 387aae01ec542bb753b1ad3aa87fb51565d1de41 SHA-256: 478c003eb1a7f89f23e9aa9920c35cb9b4c90f8be9f220237ea1a3acefbc8fae
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free Robux' or game hacks. The document body and heuristics indicate a lure to a known malicious redirector, likely intended to lead users to a phishing or malware download site. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a social engineering attack.

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/431946152/ways-to-get-free-robux-game-hack In PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/minecraft-free-online_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/tiktok-free-key_GM835599320.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/free-coins-and-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/coin-master-links-for-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkampak.sch.id/__statics/gudangsoal/files/free-hacks-for-coin-master_GM406889139.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_off00003248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3248 22304 bytes
SHA-256: 0578e087313b889c658a0088bb91716b596b445982e6f3357b8e5179c828c03c
font_01_sfnt_off00006382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6382 19196 bytes
SHA-256: 96331d0996f68a985869c858ea36cc40aa482b0fedd10a8c06058efa80dfe966

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