Malicious PDF — malware analysis report

Static analysis result for SHA-256 d44db5fd59304591…

MALICIOUS

PDF

33.6 KB Created: 2021-06-30 00:50:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f766c15c5a1a0b1daad59b97475a1254 SHA-1: e3bcd8479f4890ec15eed4f166376a15aafc4bc0 SHA-256: d44db5fd59304591853d75665838079ad6a333df69bb31e499165b57596e7a3c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to known malicious redirector infrastructure. The document body and heuristics indicate a lure for game hacks or generators, likely intended to lead users to download further malware or engage in fraudulent activities. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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.co/app/431946152/roblox-guess-the-character-cheats-game-hack In PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/slaying-simulator-roblox-no-cheat_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/roblox-free-clothes-maker_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-how-to-get-free-pet-food_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-hack-blog_GM406889139.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/hack-roblox-club_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/is-it-illegal-to-use-hacks-on-roblox-jailbreak-australia_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/speed-hack-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/roblox-admin-hack-dll_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/restaurant-tycoon-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/get-free-robux-with-synapse_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/free-roblox-to-play-online_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00002e48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E48 21860 bytes
SHA-256: 2308c526a174bb44fc85d69a2f5dde8c2f422cff3e73568f55cd3453ef662373
font_01_sfnt_off00005e8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8F 18896 bytes
SHA-256: c1e8960783dbc7ff6521cd02ce2e65ff2ef6fc35c768da4d207f489068c71d67

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