Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d48596d0c06a608…

MALICIOUS

PDF

34.6 KB Created: 2021-06-29 21:22:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 29e9c3a966b9a4d124d63f0163b3c59a SHA-1: 6cca78d2a82f7a2976c895a728d87aad930afac4 SHA-256: 5d48596d0c06a6086d0386d78dbf0db58a82cc34bb0d73e89bbea43164bb4de9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs and a prominent call-to-action in its body text, directing users to download a 'cheat' tool. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports a malicious intent to redirect users to potentially harmful content. The document's content and structure suggest a phishing or social engineering attempt to trick users into downloading malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/cheat-roblox-aimbot-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/cheat-zombie-attack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-acc-on-roblox-with-rbx-and-bc_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/http-gamesjarcom-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/appbounty-robux-hack-without-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-vip-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-negg_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-plane-blueprints-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hacks-of-roblox-for-cmds_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hack-money-vehicle-simulator-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_off00003161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3161 21976 bytes
SHA-256: 326c63069daad017b67cba2cf4331f6cc8b12d6b2ff97f204c48d0b6bb6a433a
font_01_sfnt_off000061ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61ED 19136 bytes
SHA-256: 3cdff216febc5de926117ac65c6e9e54f9ccf502741a35876e0f00f71c85c7f8

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