Malicious PDF — malware analysis report

Static analysis result for SHA-256 1239f4ccce962fb3…

MALICIOUS

PDF

47.8 KB Created: 2021-05-13 13:17:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 397ed06f37499b4aaea9d8deb2775ea0 SHA-1: 0d94f0af8236b551f6b4e9e16616a62e1d997f3e SHA-256: 1239f4ccce962fb32494b748069b9a848f0d130da5fa6c8e0d47cd9794557621
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The document body and embedded links suggest a social engineering attempt to trick users into visiting these sites, likely for further malware delivery or credential harvesting. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/479516143/free-minecraft-bedrock-server-hosting-game-hack In PDF document text
    • http://agritrade-ukraine.com/images/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/demon-roblox_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/microsoft-bing-robux_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ae4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AE4 30312 bytes
SHA-256: 30f4e06f6395814d84c2f153d3f78abe037499844ae0e5d2d85121f9e7498393
font_01_sfnt_off00008da3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA3 2892 bytes
SHA-256: c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4
font_02_sfnt_off0000978d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x978D 18672 bytes
SHA-256: fcf161d812b4feaa3e2bf8e8c417d8656b3909a46e27a4c0a1d90eda073f6fc6

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