Malicious PDF — malware analysis report

Static analysis result for SHA-256 194107e522e347d8…

MALICIOUS

PDF

34.6 KB Created: 2021-06-29 23:34:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f5dbede46a2700be0df24ef5e184c034 SHA-1: 9d3365ca6762bdaa1e1428b2e6a39cb8ab12862b SHA-256: 194107e522e347d8be170db0f5940ced1a149e3d6705667122de59c9aa2c03ab
142 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links and a call-to-action phrase, impersonating brands like Microsoft and Roblox to trick users into clicking on malicious URLs. The primary URL, http://netcdn.co/app/431946152/play-store-roblox-free-game-hack, is associated with a credential phishing lure. The document's structure and content suggest it's designed to lead users to external sites that may host malware or facilitate credential theft.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.co/app/431946152/play-store-roblox-free-game-hack.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/play-store-roblox-free-game-hack PDF link annotation
    • https://elibrary.ikhac.ac.id/repository/roblox-tix-factory-for-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-hack-online-no-survey_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-be-vip-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-the-marshmallow-head-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-how-to-make-badges-for-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-designs-for-streamers-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/pretty-girl-cheat-codes-roblox-id_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-robux-generator-tool-2021-roblox-robux-hack-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/getrobux-me-roblox-online-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-using-lucky-patcher_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-how-to-get-free-clothes-ios_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-no-offer-real_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/wurst-download_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-no-verification_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_off00002fbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBC 22564 bytes
SHA-256: 00dd490d434adffabff29ab7f8bab2cb7d6ac5bd57e27975790c3f8e151e190f
font_01_sfnt_off00006223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6223 19088 bytes
SHA-256: 86d485f2ac3195111e30d9336e9bff296bc3a09f7df587f2aa3e41c1d5624907

Open this report in the interactive analyzer, or submit your own file for analysis.