Malicious PDF — malware analysis report

Static analysis result for SHA-256 23694a2ade13478a…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 15:33:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5788f4702c481a55509b1c505533e7e5 SHA-1: 6f94f306a88b2dc3830ea690e4a7300ff3ff7607 SHA-256: 23694a2ade13478a979f17c6581734cf6ba2ce12d83958ddaeed1cfd8c031285
82 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for a 'free generator / game hack' lure, directing users to a suspicious URL. The document body also contains this URL, suggesting the primary intent is to trick users into visiting a site that likely hosts malware or phishing content. No scripts were extracted, but the overall pattern suggests a social engineering attack to facilitate further compromise.

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.tw/app/406889139/coin-mster-free-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-no-download-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/can-i-have-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/get-500-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/redeem-card-codes-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-accounts-with-bunnle-gum-sim-pets_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/mcdonaldsville-roblox-hack-script_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/swordpack-in-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-tycoon-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-instantly-no-cache_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-de-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-do-you-get-robux-5m-for-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-hair-roblox-not-model_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-full-throttle-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/gta-5-roblox-money-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins--spins_GM406889139.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_off00003190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3190 23040 bytes
SHA-256: e0319c3e29b0fc3e24f13740e8f1cedb2065e356c001e5d450397fa690e65297
font_01_sfnt_off00006592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6592 17996 bytes
SHA-256: f7d90c742ed77143965e1bd6f19d83d4aa1a1c074d0feb44f390a9defa22430a

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