Malicious PDF — malware analysis report

Static analysis result for SHA-256 2efe720b12f928e9…

MALICIOUS

PDF

34.0 KB Created: 2021-06-20 06:40:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5160cee576b7960dc39ee87f3068e3c7 SHA-1: 57975a28e96ed6c41dcd6bac960551fc4d6c3098 SHA-256: 2efe720b12f928e906bf2880325d4e7cf74acc68a27352c811026e35f9ca8e0e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a high-risk heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body and embedded URLs reinforce this theme, suggesting a social engineering attempt to trick users into visiting a site that likely hosts malware. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/autohotkey-hack-roblox-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/promo-code-for-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/cheat-engine-roblox-67_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-heaven-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/lots-of-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/citixen-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-skin-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/pepsi-hacks-roblox-script-cbro_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-boost_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-games-free-games_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/best-way-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/2021-roblox_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_off00002dc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DC4 22272 bytes
SHA-256: 6fe6e40e988f7a1301548ca29603c2eeebb73710a3367408d7690f665b38b77d
font_01_sfnt_off00005f55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F55 19248 bytes
SHA-256: 0f0aafc6478b74c8114fbbdb20378503cdf95a486bf3e9e3c1e57631945ed01a

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