Malicious PDF — malware analysis report

Static analysis result for SHA-256 11795489cc681cdb…

MALICIOUS

PDF

35.0 KB Created: 2021-06-28 16:11:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a9c6a6eccda30f5bbb23434cbb3fb7bb SHA-1: 3b33abc7f9c7aee2bef1f9c1d8de689b1631c042 SHA-256: 11795489cc681cdb6597955c8b112865b6cb70b2104189243717bcc5c1e4d36e
82 Risk Score

Malware Insights

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

The PDF document contains a lure related to game hacks and free currency, directing users to a suspicious URL. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs and a download button lure further support a malicious intent. The document likely serves as a phishing or scam document, aiming to redirect users to a site that may host further malware or phishing content.

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/copy-and-paste-for-free-gears-on-roblox-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/hacker-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robuxmatchcon_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-codes-no-survey-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-218_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-change-robux-pastebin-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-hacks-instaler_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/como-hackear-robux-100-real_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-stuff-on-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-codes-on-ios_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/real-robux-codes_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/is-minecraft-free_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-aiden_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/denis-daily-roblox-shirt-free_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_off00003122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3122 22224 bytes
SHA-256: d602f2bd99537bdf19fc92bf60fe2ca5a4843abcf05471e67eb53d91fe6a33c2
font_01_sfnt_off000062a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A7 19436 bytes
SHA-256: c93bc321fc2c171a3011e13599207b6d3fcd5b24b96eaede31247600da23549b

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