Malicious PDF — malware analysis report

Static analysis result for SHA-256 de75f0a7242b40d9…

MALICIOUS

PDF

35.1 KB Created: 2021-06-24 23:59:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 57ce8f4d687b136020fd0a440afc97f9 SHA-1: 95ee64a5cfc9bfa616bd08688c54926bc8ff3439 SHA-256: de75f0a7242b40d97362775c1a93ecd7cd236eb8d91f8651a30fd46692b5714b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to entice users into clicking malicious links. The document contains multiple embedded URLs, including one that points to known malicious redirector infrastructure, likely intended to lead users to phishing or malware download sites. 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.co/app/431946152/free-robux-generator-roblox-hack-2021-game-hack In PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/robuxian-robux-hack-website_GM431946152.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/free-robux-come_GM431946152.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/chaos-washers-on-roblox-is-getting-hacked_GM431946152.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://www.kbmmtsn1kabserang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-but-no-surveys_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_off0000323e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x323E 22112 bytes
SHA-256: 6402274952aa7bb2f0d801b0fe3c707a7e1ae51323ae616845140c56b8c8c166
font_01_sfnt_off000062f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F2 19468 bytes
SHA-256: 9698fb6f152e33c9a02cc6e1c21a801f1ddeeede9428e559f79b3303afba6e36

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