Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec8f4feb7c13d662…

MALICIOUS

PDF

34.8 KB Created: 2021-06-27 19:24:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: fd15aba46437ada32d391d34361e7ad7 SHA-1: 1f103f2a1225634331849c657bbd85cc3c60bd64 SHA-256: ec8f4feb7c13d662d0903768e1e3e622b11219f35a2e07297a9ac77e868e429d
142 Risk Score

Malware Insights

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

This PDF document contains numerous links disguised as game hacks and free generators for popular games like Roblox and Minecraft. The primary heuristic indicates a 'PDF SEO Link Farm' which suggests the document is designed to drive traffic to various external sites. The embedded URLs, such as http://netcdn.co/app/431946152/roblox-hack-com-2021-game-hack, likely lead to malicious content or further phishing attempts.

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.
  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/roblox-hack-com-2021-game-hack PDF link annotation
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/roblox-jailbreak-money-hack-2021-november_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/free-draw-roblox-tips_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/good-scripts-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/synapse-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/free-no-survey-roblox-rubox-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/roblox-vehicle-simulator-speed-hack-script_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack-script-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/roblox-jailbreak-wiki-cheater-cage_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/como-meterse-hacks-en-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/comment-hacker-une-page-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/boku-no-roblox-free-spin-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/name-change-client-roblox-free_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_off00003060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3060 22304 bytes
SHA-256: 015f14c3d3324d193d1af56ffee7352738d36b9c3a786a3e7bcf6f2d2ab38382
font_01_sfnt_off00006228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6228 19320 bytes
SHA-256: bee3fd4b833620dff52672ab62199008ac04f5161f84657c6487ad2df840b6ab

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