Malicious PDF — malware analysis report

Static analysis result for SHA-256 031cc707ab2ed9ce…

MALICIOUS

PDF

48.4 KB Created: 2021-06-03 15:46:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0b8a2ea528dca2379dc028445506e0b1 SHA-1: bd3c3949a6846bf0825d12f3c24a3fd85707a363 SHA-256: 031cc707ab2ed9cefd7f9585a299710e635c8b76f7f3a23002c3b94fcae53b24
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a lure for a "free generator / game hack" which redirects to a malicious URL. While no scripts were directly extracted, the PDF structure and embedded URLs suggest a phishing attempt to trick users into visiting potentially harmful sites. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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/479516143/minecraft-that-you-can-play-for-free-game-hack PDF link annotation
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/coin-master-online_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/free-roblox-acc_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/coin-master-bonus_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/robux-generator-com_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/free-roblox-gfx_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/free-bling-bling-card-coin-master_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsnparung.sch.id/__statics/gudangsoal/files/tiktok-free-movie-website_GM835599320.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_off0000553f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x553F 30768 bytes
SHA-256: 8b6f90ab7b5f77457bb7e99990a75cb7e82fe0fa4a666ade09b39b9e9dba8174
font_01_sfnt_off00009a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A73 18588 bytes
SHA-256: c2b8d9ff41b5817f39fe12fa9914c2498059949854f0a019c9b111e2507a5aed

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