Malicious PDF — malware analysis report

Static analysis result for SHA-256 b95063210cf7883f…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 10:24:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 04aeccf7a05f7c6605fe542f3b874ba1 SHA-1: d2ef494ebb10f7097f245720f625e9ad93f8ad43 SHA-256: b95063210cf7883fdb627afd67da495303ae2f4e29cf2fa8d8b73b40a332e913
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that promises free Robux and game hacks, indicating a phishing or scam attempt. The heuristic 'PDF_SEO_LINK_FARM' suggests a large number of external links, likely to further phishing or malware distribution sites. The ML classifier also flagged this PDF as malicious with high confidence.

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/free-robux-generator-com-roblox-hack-game-hack PDF link annotation
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/roblox-speed-hack-2021-code_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/how-to-use-inspect-element-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/how-to-hack-roblox-to-get-admin-commands_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/free-robux-generator-for-kids-no-password-nosurveys_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/how-to-get-free-robux-in-console_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/hacks-to-steal-robux-sign-up_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/free-robux-proof_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/roblox-2021-robux-free_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/roblox-guess-that-character-for-free-robux_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/free-roblox-groups_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/roblox-free-body_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/roblox-paintball-hack_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/roblox-bux-free_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/roblox-hack-kick_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_off00003124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3124 22100 bytes
SHA-256: aa69a59cb91a05a76cbb00b9ef13a3cfae71ddfa9969f51bb968a60ec65cdc69
font_01_sfnt_off000061c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C3 19324 bytes
SHA-256: b5fe64a349a1260a8bf1e39cb434a35d84e03f20b24c2703f62dd6d7df3547b9

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