Malicious PDF — malware analysis report

Static analysis result for SHA-256 88bbdc4cda7c09f4…

MALICIOUS

PDF

44.4 KB Created: 2021-05-16 00:34:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dce860a58b1eca6f1d5258f06040b8e6 SHA-1: 2852286160be372d816e49182dfbda325a3e3390 SHA-256: 88bbdc4cda7c09f44aa3c238d32fa4184da3486605abaf8ab8931118e0cc62fb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, disguised as a "Coin Master Hack" generator. The presence of a visual download button and the lure of free game currency suggest a social engineering tactic to trick users into clicking the malicious link. The document's content and embedded URLs strongly indicate a phishing or scam attempt, likely leading to further malware or unwanted content.

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 https://netcdn.xyz/app/406889139/coin-master-hack-unlimited-spins-apk-download-game-hack In PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-33-download_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
stream_003_off00004b5f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B5F 29340 bytes
SHA-256: 59c002b985796de9a7806415b8ab71685aea2581b254587cff35385764bd1334
font_01_sfnt_off00008983.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8983 18916 bytes
SHA-256: 36b5946d0fa01df03061b9872aea65f63cba93bccd0378a8f0b0329212d0019c

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