Malicious PDF — malware analysis report

Static analysis result for SHA-256 598ee8f3ea52b964…

MALICIOUS

PDF

45.0 KB Created: 2021-06-03 13:23:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 36aa22f46dfe4f01d738d81b2515b1f8 SHA-1: 88c30e468f411af866c065fb739d63b2cdfe098d SHA-256: 598ee8f3ea52b9642a4dbda78a2ffd142c7a3a7da3dbbbb1fe63607044975cca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a "free generator / game hack" website, identified as malicious infrastructure. The document body and heuristics indicate a lure for game-related cheats or hacks, likely to lead users to a malicious download or phishing page. No scripts were extracted, but the presence of multiple malicious redirector links is a strong indicator of malicious intent.

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-app-free-download-game-hack In PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/clean-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/robloxhacks_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-free-blogspot_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_off00005404.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5404 25048 bytes
SHA-256: 2bb8ace35a91c0b32b76763173acd5b582ede3bca536771447f30cb4275714db
font_01_sfnt_off00008cc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC2 18464 bytes
SHA-256: 40f30d03f9df9e16cedf50fa7ce351738090605bdee0a2874ac532244730da1c

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