Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e77f35dc3f0e97d…

MALICIOUS

PDF

44.6 KB Created: 2021-06-03 22:47:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d10d23d94c75a4664b3b3a207d3fe2ed SHA-1: d87e207c97e3d69011e91ff969e92c8826ee1f63 SHA-256: 2e77f35dc3f0e97d1fe8745afe2cb74c60bba70af7ef06571a84fed41b0f7acc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The primary malicious URL identified is https://netcdn.online/app/406889139/coin-master-promo-code-2021-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack designed to trick users into downloading further malware or visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-promo-code-2021-game-hack In PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-roblox-codes_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-minecraft-website_GM479516143.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/tiktok-views-free_GM835599320.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/robux-earner_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/roblox-robux-page_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/real-hack-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
stream_004_off000052c4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52C4 24704 bytes
SHA-256: db119a8324b81714d1baa789920b7ee4e648df9bef91138780a7014cd2f8df05
font_01_sfnt_off00008b0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0A 18536 bytes
SHA-256: 78ba75ad106ca8b847d5b6b00c40510cee8ee17e324b6b043c23b4765ae22915

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