Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e021db436a5f979…

MALICIOUS

PDF

46.8 KB Created: 2021-06-11 10:11:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9d7c1d03c87ec31f512ae70fe65a5c53 SHA-1: 4fa06c53b7a0ed17ba8f1836ffe4fd23cca10805 SHA-256: 5e021db436a5f979c07cfbb7074c3adfc078605e6220fe8c257ff4a8117603b8
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links disguised as game hacks and generators, a common lure for phishing or malware distribution. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a link farm or redirection scheme. While no scripts were explicitly extracted, the PDF structure and heuristics strongly suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.tw/app/431946152/assassin-roblox-hack-script-pastebin-game-hack PDF link annotation
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/freerobux-hack-us_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/how-to-hack-the-northern-frontier-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/coin-master-daily-spin-link_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://e-learning.mtspuicijantung.sch.id/__statics/gudangsoal/files/coin-master-34-4-free-download_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_off00005265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5265 28472 bytes
SHA-256: ba2bb7e2bfb27f4346f5e0cab7baee70c8b162a91b5f388f8f21c396659201c6
font_01_sfnt_off000092fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92FB 18736 bytes
SHA-256: 5083ade52b8b2db1dc55be1b1be84224e88192dadff303319ef269285b978477

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