Malicious PDF — malware analysis report

Static analysis result for SHA-256 589fae8a4a87aacb…

MALICIOUS

PDF

40.9 KB Created: 2021-05-10 16:37:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: e94308c649afca2adbf6505e27aa9f32 SHA-1: c40eaf1a915df22ca920ad039879386c4a21e4ee SHA-256: 589fae8a4a87aacb7945dc6abf844afa7196f491e4bafce5dc32a3009d2b1f90
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting "game hacks" and "generators". The primary redirector URL is https://netcdn.xyz/app/406889139/how-to-get-free-cards-on-coin-master-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector designed to lure users to potentially harmful sites, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/how-to-get-free-cards-on-coin-master-game-hack In PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/robux-games_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/download-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/coin-master-com_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-coin-master-spins-hack_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_off0000478c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x478C 24308 bytes
SHA-256: 18fdf69805b90dd2279081ae00ec2925d72e1b59614efed5476b22829003e5af
font_01_sfnt_off00007e43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E43 18048 bytes
SHA-256: bfb64ce9e7d02389d71d7e4e9bdd975b312ee1bb88589b15dc2c17ff59354668

Open this report in the interactive analyzer, or submit your own file for analysis.