Malicious PDF — malware analysis report

Static analysis result for SHA-256 4136a7b31b1a2681…

MALICIOUS

PDF

46.8 KB Created: 2021-06-03 12:38:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c200b31ca62a94bcca2766662502d516 SHA-1: 9226ea9be4034978f631c8a04ed69eaa951893e0 SHA-256: 4136a7b31b1a2681cf6b1c7968c5d3446c23df7cd38d1d36846d4cfb6b3146f5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary malicious URL identified is https://netcdn.online/app/479516143/how-to-get-minecraft-bedrock-edition-on-pc-for-free-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/479516143/how-to-get-minecraft-bedrock-edition-on-pc-for-free-game-hack In PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/daily-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/whats-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/tiktok-free-view-iphone-keychain_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/pig-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.freenom.comHeyIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051aa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51AA 24644 bytes
SHA-256: 158d4b35e6ccff11e31ec24d9983b94897afef13611320842ea70b2e609eb973
font_01_sfnt_off0000899f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x899F 2820 bytes
SHA-256: 34dd21cbcbbf8680f9624d5ddfa25e49232e6768200f74ddacb5347fd7a5f6dc
font_02_sfnt_off00009340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9340 18588 bytes
SHA-256: 22ac8c3ecfb52a55793ff71594f7fcfb36c91cb725e140eddc746c1d049752ce

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