Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdef6e57ac27efac…

MALICIOUS

PDF

35.8 KB Created: 2021-07-04 13:04:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: edfaf17aea1265421c42dcec5b74efed SHA-1: 2b0614a71629d608b79ad406561b603bba06063a SHA-256: cdef6e57ac27efacdbb9451aecfd4ac3d6f761b2032d5cad81a6f73f1f050b44
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a known malicious infrastructure, likely to trick users into downloading malware or engaging in scams. The document body and embedded URLs suggest a lure related to game hacks and free currency, a common social engineering tactic. 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/406889139/free-coin-master-spin-app-game-hack In PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/hack-in-roblox-account_GM431946152.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/download-hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/optifine-pe_GM479516143.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://bormuratourtravel.com/ckfinder/userfiles/files/inappropriate-roblox_GM431946152.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
font_00_sfnt_off0000382a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x382A 22316 bytes
SHA-256: 04087c2371ea41bc91a8b5d22393b450cd4b18a3df82fe00a4e9f40d6826906d
font_01_sfnt_off000069a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A0 18176 bytes
SHA-256: c20278108810162b1b694c6666ef9c6da72e60db33a50c207a00b3484d1a6bb3

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