Malicious PDF — malware analysis report

Static analysis result for SHA-256 13eaf3f6ee0a7fc9…

MALICIOUS

PDF

35.5 KB Created: 2021-06-26 00:50:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9f67573f87b1acffd4004c036d3d4761 SHA-1: d457338bc251d7efc6bdb147462f975240b7cbc5 SHA-256: 13eaf3f6ee0a7fc96ad5b69f0eb08a2ac5b3357c3edd1fb206c09db167c11f66
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which are SEO-optimized and point to pages offering hacks or free currency for popular games. The primary malicious URL identified is http://netcdn.co/app/431946152/be-skeptical-of-roblox-free-robux-game-hack, which likely hosts a malicious payload or phishing content. The document's structure and content strongly suggest a phishing or malware distribution attempt, masquerading as game-related content.

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/be-skeptical-of-roblox-free-robux-game-hack PDF link annotation
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/xray-hack_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-bling-bling-card-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/coin-master-hack-download-ios_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/tiktok-viewer-free_GM835599320.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/khaos-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/how-to-aimbot-hack-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-robux-mobile_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/how-to-work-get-a-roblox-hack-gui-to-work_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/pokemon-go-free-legendary_GM1094591345.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_off0000336a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x336A 22268 bytes
SHA-256: b80eb5ac00588213af08f8b6ac51f70fd3fad49bb06abcca382a320a6a07d8b9
font_01_sfnt_off000064bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64BC 19360 bytes
SHA-256: da8652216da31e00e1216f4b1c07eaea0ddbd0c4e9f1121312a892316c1c5a59

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