Malicious PDF — malware analysis report

Static analysis result for SHA-256 066e58788b16c4c8…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 12:18:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 4912d3bddfb8ca35153eedd59517645e SHA-1: 8caf4669e93e93f6742ed835d06b97f0bd91125e SHA-256: 066e58788b16c4c8be911f0a4f40e25aa2954b03722d18322fe5a0862b985e32
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious websites, masquerading as game hacks and free generators. The primary lure appears to be related to 'Coinmasterfreespinlink' and various 'Roblox' hacks. The document's structure and embedded URLs strongly suggest it is designed to trick users into visiting compromised sites, likely for further malware delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/coinmasterfreespinlink-game-hack In PDF document text
    • http://111.68.26.74/widyapustaka/repository/wall-hacks-for-roblox_GM431946152.pdfPDF link annotation
    • http://111.68.26.74/widyapustaka/repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/robux-win-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/tp-hacks-script-roblox_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/bloxburg-roblox-bux-hack_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/como-consegir-robux-gratis-sin-hack-beteg_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/oprewards-com-login_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-recording-roblox-software_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-free-exploit-dex_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-hack-roblox-phantom-forces-aimbot_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-give-someone-else-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-hack-google-chrome_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-games-not-scams_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-spins-and-coins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-sunset-city-how-to-sell-furniture-no-hack_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_off00002fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCF 23072 bytes
SHA-256: 8316ca5a7bd960c10fe827cdf5950d58db5b2db00ad1e6b7e2d031de604b5df0
font_01_sfnt_off000063ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63ED 18516 bytes
SHA-256: a000f6d0810836f211bd69ad4954bd13017d955b6cad91c28efc413f8e97b1ec

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