Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef68d56354272949…

MALICIOUS

PDF

33.8 KB Created: 2021-06-20 07:10:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0295f27bf63dda510b9cefeb00d2f1ca SHA-1: dbf2707660cdbfbeafe13e32e75f429b8cd121f6 SHA-256: ef68d5635427294950f32e49c646795fc00b175ed0db53ca1cb50efd8aa335e2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that lead to a known malicious redirector infrastructure, specifically advertising 'free game hacks' for Roblox. The document body and heuristics indicate a lure designed to trick users into clicking these links, likely leading to further malicious content or downloads. No scripts were extracted, but the presence of malicious links and the lure pattern strongly suggest a phishing or 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.co/app/431946152/protosmasher-roblox-free-game-hack In PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-robux-cheat-engine-download_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-roblox-proxy_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-gamepasses-for-free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-promo-codes-for-roblox-clote_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-free-robux-on-xbox-one-s_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/hack-site-for-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/hack-roblox-jailbreak-noclip_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-roblox-meme-skins_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/hack-roblox-games2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-do-you-speed-hack-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-la-plus-facile_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-hackr-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/top-car-games-on-roblox-free_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_off00002e96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E96 21692 bytes
SHA-256: 4bbb27aa820cc902d78b656a9d0f72dead96e7a9381dd309dc72da5a4fa413dd
font_01_sfnt_off00005e35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E35 19336 bytes
SHA-256: 1eb2633724ceb670b9743bd7fec4b5f31636a64b205eb51d9880db780c950211

Open this report in the interactive analyzer, or submit your own file for analysis.