Malicious PDF — malware analysis report

Static analysis result for SHA-256 e706e1d2533d3714…

MALICIOUS

PDF

24.7 KB Created: 2021-07-07 18:58:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 4e72f507f8cc749658cf335a7d4aaaef SHA-1: f3c9a13a7b7a1af6351d3549d4b3abe139ba327d SHA-256: e706e1d2533d3714fd82f2b33f4fcbf177798324d7e121de5ec8d2573c81912f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links designed to lure users into clicking on them by promising free in-game currency or hacks. The primary link, http://netcdn.tw/app/431946152/free-robux-discord-servers-game-hack, is identified as a malicious redirector. The document's content and embedded links strongly suggest a phishing or scam attempt, likely to lead users to further malicious content or credential harvesting pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 3

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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/431946152/free-robux-discord-servers-game-hack In PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-get-everything-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-hack-roblox-jailbreak-mac_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free4mobile24-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/haxteamcf-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/master-free-spin-and-coin-links-html-m-1_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/wurst-112-2_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30EC 21936 bytes
SHA-256: 9b54767da6c23783684b0d3a3133cbfc5e2ad275c9a99677d22dd156a1acd679

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