Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8d28f562fbd64ff…

MALICIOUS

PDF

35.5 KB Created: 2021-07-09 19:00:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 126dc9a58052ea99fccf2bab29008d08 SHA-1: a8609bbcbbc4f0b9685b9dabda4451ea9fbb2c33 SHA-256: d8d28f562fbd64ff310ec93fd37cd720f631e9b805b19d1e394457267e9dd423
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link that redirects to known malicious infrastructure, masquerading as a free game hack generator. The ML classifier strongly indicated maliciousness, and the presence of a download button lure further supports a malicious intent. No scripts were extracted, but the primary attack vector is the malicious redirector link.

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/479516143/minecraft-svg-free-game-hack In PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/cheat-roblox-lumber-tycoon-2-teleport_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/games-for-robux_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/pokemon-go-free-coins-2021_GM1094591345.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/master-free-spin-and-coin-links-html-m-1_GM406889139.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/how-do-u-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/minecraft-client_GM479516143.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/roblox-svg-free_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/fight-club-roblox-hacking_GM431946152.pdfIn PDF document text
    • https://elearningmadrasah.min2madiun.sch.id/__statics/gudangsoal/files/how-to-hack-to-get-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_off0000376b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x376B 22708 bytes
SHA-256: 310492d174321cb54b52c36aa4cc8db6119614f3cab0262b6d4899a7e760ff03
font_01_sfnt_off00006956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6956 17968 bytes
SHA-256: f82c060a5662ddcca675aec0cfac04b32032cde6baf3a8524f802f6fcb7e6d40

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