Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ec2d4522c247a94…

MALICIOUS

PDF

42.8 KB Created: 2021-05-15 13:33:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 290694d775d8692cc79072f07acdffa4 SHA-1: aed6d9544ffc34824056eb6ca4baf12ed9d25415 SHA-256: 0ec2d4522c247a9412a2d767cd3fb2caffc3239bbd3b18e699c93697b8cc0ca1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The ML classifier strongly flagged this PDF as malicious. The primary malicious URL identified is https://netcdn.xyz/app/431946152/earnrobux-game-hack, which is part of a known malicious redirector chain. No scripts were extracted, but the document's structure and embedded URLs indicate a phishing or scam attempt.

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/431946152/earnrobux-game-hack In PDF document text
    • http://gops.pruszczgdanski.pl/images/robux-game-com_GM431946152.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/www-rbxhut-com_GM431946152.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/static-moonactive-net_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004966.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4966 25824 bytes
SHA-256: 309227ec94fefb74c30d5fdb0ac6e67b4d3a770af9d42eca3716db7bfd31f70d
font_01_sfnt_off000085a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85A2 18076 bytes
SHA-256: 2721194a66b32dfdaea4e26ed0bd84b304de41eeda81871a4ffc347c5a8adb25

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