Malicious PDF — malware analysis report

Static analysis result for SHA-256 410d10abaef0a4cd…

MALICIOUS

PDF

33.5 KB Created: 2021-07-06 07:30:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: be4c6e45813afeb88fac166a17f4bafc SHA-1: d22455a7830d2bf70860e8a6f275f81176b36281 SHA-256: 410d10abaef0a4cd3a4fa15e5663627f762fe48f1291da8aa8b824cb57d53eb5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary malicious URL identified is http://netcdn.tw/app/479516143/can-you-host-a-minecraft-server-for-free-game-hack. The document body and heuristics indicate a social engineering tactic to trick users into clicking these links, likely leading to further malware downloads or phishing attempts. No scripts were extracted, but the PDF structure itself facilitates the malicious 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/479516143/can-you-host-a-minecraft-server-for-free-game-hack In PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/free-cool-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/roblox-if-roblox-wasnt-free_GM431946152.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/how-to-get-free-robux-by-playing-games_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_off00003065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3065 21808 bytes
SHA-256: c8fbe40081c3c3b5babd89bba1933762b66a5806dc49402c8e3d366bafc38052
font_01_sfnt_off0000600a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x600A 18416 bytes
SHA-256: 441f603c70f76477190c3697d348d70a2c9b8049fc674739932ccc54fe89fe5f

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