Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b30a4d6ca793c60…

MALICIOUS

PDF

35.7 KB Created: 2021-06-29 06:57:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: b31b814ee8bef9120cd68b069320171b SHA-1: 24c1f35dfde76a85db8614e133842363885f2643 SHA-256: 7b30a4d6ca793c6051c25e6aebe7fb3464186864f14ef11652a25171f2982e5b
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector infrastructure, specifically advertising a cheat engine for Roblox. The ML classifier also flagged this PDF with high confidence. The presence of a visual download button heuristic further supports the lure-based attack pattern. The primary IOC is the malicious URL which likely leads to a malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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.co/app/431946152/cheat-engine-roblox-speed-hack-6.4-game-hack In PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/best-roblox-outfits-free_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/robux-generator-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/when-do-hackers-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/v3rmillion-roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-mod_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/cheat-roblox-lumber-tycoon-2-paint_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/fisticuffs-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/emergecny-response-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-cbro-cheat-spots_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/top-10-los-mejores-hack-de-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-item-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-exploits-for-mac-free_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/ios-coin-master-hack_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_off00003141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3141 22796 bytes
SHA-256: 98aeb82ae37e7406487d8a1b1ccd17b5119365e39da0c7dabe47c1966292ffe3
font_01_sfnt_off0000649e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649E 19692 bytes
SHA-256: 7047d99ae4c64ccee3858519ed6b153d0e99d9723d900f17f5ef3fbb17c828d7

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