Malicious PDF — malware analysis report

Static analysis result for SHA-256 a69734e5da35f0af…

MALICIOUS

PDF

34.2 KB Created: 2021-07-03 20:36:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 2fc19b796198e813bf9662d05e166096 SHA-1: 9984cf3def0ff4634f0919f581ad4b2c4e4cd2a4 SHA-256: a69734e5da35f0aff7be361d1f6afb5df9668424a31fe774e6b2ca0befa531d1
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 'free Robux' or 'Coin Master' cheats. The document body and heuristics indicate a lure for game-related exploits, likely leading to further malware download or phishing. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/431946152/give-free-robux-game-hack In PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/coin-master-ad_GM406889139.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/regex-roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/roblox-free-robux-cheat-engine-64_GM431946152.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/how-add-robux-to-used-roblox-card-cheat_GM431946152.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/robux-website_GM431946152.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/free-robux-master_GM431946152.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/how-to-hack-someone-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/websites-to-get-free-robux_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_off00002e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E76 22460 bytes
SHA-256: 503fa364c39145db799e3f30cfe1748d58317dcdc9a6ce300df4a9e23b4407f6
font_01_sfnt_off000060b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B7 18952 bytes
SHA-256: 099c16aecc59e05ee2a67675ac57707afb633d1d3f2ee222ad3cc0024ed5c63f

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