Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d982dd80870a713…

MALICIOUS

PDF

35.0 KB Created: 2021-07-03 15:23:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 1c13019dcc6eedbef6ed69dbfa684477 SHA-1: 1717b8806a32568db6eef5018c438f2a72ad658a SHA-256: 2d982dd80870a713fb97af554799820f4265d227ffe4bf70c428dc1f2181f469
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The ML classifier strongly flagged this PDF as malicious, and the presence of a visual download button lure further supports a malicious intent. The primary URL http://netcdn.tw/app/479516143/all-minecraft-handbooks-game-hack is identified as a malicious redirector, likely leading to a further stage of infection or phishing. No scripts were extracted, but the document's structure and embedded links are indicative of a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/479516143/all-minecraft-handbooks-game-hack In PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/free-likes-and-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/www-robux_GM431946152.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/free-robux-robux-zone-wordpress_GM431946152.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/cant-make-my-items-free-in-roblox_GM431946152.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/free-robux-guuudinfo_GM431946152.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/roblox-hack-booga-booga-download-2021_GM431946152.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/play-roblox-free-online-now_GM431946152.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/how-to-hack-roblox-tutorial-for-9-year-olds_GM431946152.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/how-to-get-free-money-on-jailbreak-on-roblox_GM431946152.pdfIn PDF document text
    • https://stain-madina.ac.id/assets/ckfinder/userfiles/files/roblox-robux-hack-generator_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
font_00_sfnt_off0000325b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x325B 22876 bytes
SHA-256: 2453c82c0705066ff81616e2969406995e5a57ad485e08557f6d4b27c5941126
font_01_sfnt_off0000654f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654F 18572 bytes
SHA-256: b0b9eb7219ad3e7ecfb728a5cdc7e716bdd52ca73260479e7ecda84c6c3b0cbe

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