Malicious PDF — malware analysis report

Static analysis result for SHA-256 8713c0b698504dfa…

MALICIOUS

PDF

42.3 KB Created: 2021-06-03 05:27:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 58375759fd88b440d03a7061b31beb8f SHA-1: 977ba559447c46e52dc65e6e10d90de10be6cdea SHA-256: 8713c0b698504dfa350d3eb2bb0a629d8eccdda62f368808e85dc55cd1fb503f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a game hack, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the PDF URI heuristic confirms the presence of an external link. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to a potentially harmful site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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 https://netcdn.online/app/406889139/coin-master-free-coins-generator-game-hack PDF link annotation
    • http://library.stieyapan.ac.id//repository/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/getrobux-ninja_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/pubg-uc-price-in-nepal_GM1330123889.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/where-to-get-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/hack-coin-master-site-rssingcom_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-no-human-verification-and-no-survey_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
stream_004_off00004ef0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EF0 23808 bytes
SHA-256: 855555123629c45e9775b0762475d82c2c85824b28a0403d5a43cd70add58e36
font_01_sfnt_off00008475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8475 17712 bytes
SHA-256: f6b7bbb27796bfdd91832c5c9631b2ef3c604ec4967bc220e21b541acce31e79

Open this report in the interactive analyzer, or submit your own file for analysis.