Malicious PDF — malware analysis report

Static analysis result for SHA-256 507058cc0957ec07…

MALICIOUS

PDF

48.5 KB Created: 2021-06-04 02:45:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3b9bda384af1002460f4753434211edd SHA-1: 0d6b29be729ebd49d3ce140bdb6da0b7c9b88724 SHA-256: 507058cc0957ec07527e9ba6d1c66ecdcc1441ac5514324973dc3cef9484ec25
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a high-severity heuristic firing for a 'free generator / game hack' lure, directly linking to the URL https://netcdn.online/app/431946152/free-robux-no-generator-game-hack. This URL is embedded within the document body and is the primary indicator of malicious intent, likely serving as a redirector to a malicious payload. The ML classifier also flagged the PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/free-robux-no-generator-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-decal-id-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/mcpe-com_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005227.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5227 25700 bytes
SHA-256: 0a6635f0c93521003af60d36c2fa9f174cfa7c5cab426d95b507dd0b30ebcf19
font_01_sfnt_off00008e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E2A 3884 bytes
SHA-256: 64ea6bfd232c3abde76d8b86727203bfa3f935a5783cd0c1f642cf6d3fb42b29
font_02_sfnt_off00009ad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AD2 18344 bytes
SHA-256: d0a2580a9848789708f711aeedd4c44eef26827bf748da476089155bc80243e8

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