Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c78d38838fb442…

MALICIOUS

PDF

33.2 KB Created: 2021-07-06 01:15:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4540879c3754a8555d516c546ba22893 SHA-1: 1d4d2b569a46bd803f1d788dfae4d230c77b55f9 SHA-256: 68c78d38838fb44261cf276e642f69d05441b7508740b974909940074ccddecb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure for free game hacks and converters, directing users to a suspicious URL. 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. No scripts were extracted, but the overall pattern suggests a phishing or malware distribution attempt.

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/479516143/universal-minecraft-converter-free-game-hack PDF link annotation
    • http://lib.teknik.unimal.ac.id/repository/roblox-font-free_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-simulator-100k-free_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-at-http-get-robux-eu5-net_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-free-coins-and-spins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-roblox-hacks-for-good_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-generator-roblox-no-survey-pc-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-clothes-on-roblox-2021-without-bc_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-hackeado-de-cuenta_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-hack-pc_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/is-it-possible-for-someone-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/robux-free-hack-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/pastebin-robux-account-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-cheatengine_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_off00002ecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECD 21908 bytes
SHA-256: ebe30e5fcaf4c0ca5c5767977365909a29316097eed8dc23b2a2e50fe9a6b563
font_01_sfnt_off00005eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEC 18372 bytes
SHA-256: 7d318ad6347a4557b0fba1c54e9227a7af1ff8e9321d667927090105f213260a

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