Malicious PDF — malware analysis report

Static analysis result for SHA-256 632558c5b7a7da28…

MALICIOUS

PDF

35.0 KB Created: 2021-06-27 15:17:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bbaf73f1a574cac5f0fd477be0d94e6d SHA-1: 224d428b773d9bda47afc22834f0c9fa60011a68 SHA-256: 632558c5b7a7da28abebc78e4c9a1d06fad7fc7d7830b3abc7194ae830da8bd6
102 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs and a document body that promotes tools and hacks for games like Roblox and Coin Master, suggesting a lure for users to download potentially unwanted or malicious software. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, likely for SEO manipulation or to host further malicious content. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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/cheat-engine-2021-roblox-speed-hack-game-hack PDF link annotation
    • http://opac.salatigakota.go.id/slims7/repository/hack-on-ulitimate-driving-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-earn-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/mount-everest-roblox-free-rescue-gamepass_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-hack-assassin-boxes-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/hack-roblox-jailbreak-money-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/form-1-roblox-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-and-spin_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/tiktok-free-login_GM835599320.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-roblox-codes-that-works_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-roblox-injector-september-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/account-hacker-for-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-robux-generator-no-quiz_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-hack-with-lucky-patcher_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_off00002ed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED5 22656 bytes
SHA-256: 800024f78f14344cf0287840b35b4ff7967efbf4ee96348c6e68fbeed25864c9
font_01_sfnt_off00006164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6164 19800 bytes
SHA-256: 974ae51adb39be00997a5644c629d9ce256d98121a252c05cc5afa943a2b9389

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