Malicious PDF — malware analysis report

Static analysis result for SHA-256 97702cfb983d9b04…

MALICIOUS

PDF

43.2 KB Created: 2021-05-12 02:32:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 6f00bc4fe5aecba15ed9472612d4490b SHA-1: 8aaa13afc038988cc87d03d48d35b735bca8ad94 SHA-256: 97702cfb983d9b04cecea0e7dc3371a3af1fb19541f0041ef414ba4186160162
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/431946152/free-robux-hacker-us-game-hack PDF link annotation
    • http://digilib-pps.unja.ac.id/repository/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/krnl-download_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/minecraft-windows-10-mod-menu_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/cm-free-spin-link-today_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_off00004ac7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AC7 25616 bytes
SHA-256: 56a28dcc583d819e2f20be785c354a84f1de8a362f83755432d8e2ed3f8f5080
font_01_sfnt_off0000859f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x859F 18600 bytes
SHA-256: be32b0f906764c1f2317decc7ac5a24a5975e1ace61028a3a9703984df87bb8b

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