Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7026fc82458f202…

MALICIOUS

PDF

43.2 KB Created: 2021-05-10 13:32:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 46196d78f5249c9e9a86f2d7e8f28a84 SHA-1: 2df3a998b5ac71965a34172b0e4b3505f9e58d9b SHA-256: a7026fc82458f202c8ef69d6e53f917701140c7344a849cccbb9e122679ee474
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'game hacks' for popular games. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-roblox-promo-codes-for-robux-game-hack. This lure is designed to trick users into clicking through to potentially harmful content or further malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/431946152/free-roblox-promo-codes-for-robux-game-hack In PDF document text
    • https://library.iuli.ac.id/repository/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/robux-claimer_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/watch-ads-for-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-daily-free-spins-blog_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-free-spins-iphone-2021_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/daily-free-spin-coin-master-link_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
stream_003_off00004add.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ADD 25224 bytes
SHA-256: 8e4cdcf9490e9ec81ba655f3bf844a8b5d3b4366e45908cf11f6510d3ee4b7f3
font_01_sfnt_off00008550.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8550 18676 bytes
SHA-256: dfd02273a8a318689417f97410c8e56666a417a259e3d1ed1911a13d5d5a3d3c

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