Malicious PDF — malware analysis report

Static analysis result for SHA-256 de5712bef5451f51…

MALICIOUS

PDF

34.7 KB Created: 2021-07-01 06:33:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 43cfe939fa65472b9ba94885fb541146 SHA-1: 8f138c63164937fb63f042ee975df1a0e178f92a SHA-256: de5712bef5451f512df65102f37d2b893bf6c20598e77bdef361aca570f30aca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising 'free generators' and 'game hacks'. The primary malicious URL identified is http://netcdn.co/app/406889139/village-coin-game-hack. The document's content and embedded links strongly suggest a social engineering lure to trick users into visiting potentially harmful sites, likely for further malware delivery or credential harvesting.

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/406889139/village-coin-game-hack In PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/roblox-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/cm-spin-link_GM406889139.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/google-roblox-games_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/coin-master-mod-version-free-download-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/woman-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/coin-master-hack-review_GM406889139.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/fbchampion-com_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_off000031e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E1 23224 bytes
SHA-256: 3aeca2921ad0f6670f02a85af5b5d57465fd4eca8715a6dc2d5906fc81a1109f
font_01_sfnt_off00006639.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6639 17936 bytes
SHA-256: 3bbda0bd441ec3c7f0aeef3498007f40c6bdaddf28ee5a9483f61854498fb3d4

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