Malicious PDF — malware analysis report

Static analysis result for SHA-256 2de3576d9f5569db…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 04:49:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 17ee6aeabc38197003080d3b68be510b SHA-1: 9704f050deaf46c4a2565ef9ec8fa50971be6969 SHA-256: 2de3576d9f5569db1c3937b2dc1c8fa62b23e113dcd0ad1d51dc3cd79d51e4ed
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains links to a known malicious redirector infrastructure, specifically advertising a 'coin master free link daily game hack'. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting potentially harmful sites. While no scripts were extracted, the PDF structure and embedded links strongly suggest a social engineering attack designed to lead users to malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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
  • 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/406889139/coin-master-free-link-daily-game-hack In PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-robux-hack-console_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-roblox-accounts-with-admin_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/robux-gratis-hack-para-android_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/can-you-get-roblox-on-ps4-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/adopt-me-roblox-money-hack-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-does-roblox-know-if-you-are-hacking_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-cheat-engine-and-ccv5-bypass-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-vampire-hunters-2-cheats_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/the-community-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/imba-tools-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-hacks-in-counter-blox-roblox-offensive_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-rc7-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-free-admin-on-roblox-ios_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-generator-no-human-verification-or-surveys_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_off00003386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3386 22668 bytes
SHA-256: 7ee7b7dc1fec31491219c30ecf69378a8d0f0c4cdc28d8eb459bf8422cdbe358
font_01_sfnt_off00006642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6642 18588 bytes
SHA-256: 5c14532fc2e0aae9a5b258814547b169b116322b331244fa0e17de8eda3c88e0

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