Malicious PDF — malware analysis report

Static analysis result for SHA-256 195a6e9783d1b446…

MALICIOUS

PDF

38.4 KB Created: 2021-05-25 12:16:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 703bf78f0956105204969e8921b4e956 SHA-1: a424834f708468723c22a64e3eae1f2064a9c848 SHA-256: 195a6e9783d1b446a482c76854f8c449ab7cac64747b8b82bf24e4b70c91a596
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing indicating it links to a 'free generator / game hack' redirector. The document body also contains a prominent call-to-action phrase and multiple URLs that appear to be part of a phishing or scam campaign. The primary malicious URL identified is https://netcdn.xyz/app/479516143/minecraft-free-download-ios-game-hack, which is likely intended to deliver a payload or lead the user to a fraudulent site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/479516143/minecraft-free-download-ios-game-hack PDF link annotation
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/how-to-hack-roblox-accounts-passwords_GM431946152.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_002_off00003493.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3493 29216 bytes
SHA-256: d3a25271741d152567e2fa8c7c4ca72c0ad3cf4edd522346edc2a96af5d2ea38
font_01_sfnt_off000074e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E7 18292 bytes
SHA-256: 753811b4f273a5193b6cf6bc91b948249e8ca1a4fe068b1e84efe9b046d1d7eb

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