Malicious PDF — malware analysis report

Static analysis result for SHA-256 d48ac37591e2a89f…

MALICIOUS

PDF

43.2 KB Created: 2021-05-10 21:31:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 668df278e2d7e8dbb69441c819a356c0 SHA-1: 6ff256fd64662aebbdcfc3e2e7723cc4a75516d5 SHA-256: d48ac37591e2a89f918392fc1026cf4c8413bd29ac060426bbcab4bb42126458
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous external links, many of which are SEO-optimized and point to other PDF files, suggesting a link farm designed to lure users with promises of game hacks. The document itself contains obfuscated text and a primary URL that also leads to a game hack lure. While no scripts were explicitly extracted, the PDF structure and extensive URL usage indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/479516143/minecraft-free-ios-2021-game-hack PDF link annotation
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-cheat-engine_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/free-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/roblox-online-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021-apk_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/freerubux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2wonogiri.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021-no-human-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
stream_003_off00004c96.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C96 25672 bytes
SHA-256: 9e89544f409900194d9e74f06586ad100c9c868fb8f12341e7e2a791aeac4433
font_01_sfnt_off000086f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86F7 18112 bytes
SHA-256: b55c1404a277e69c847ae3cf6ace6563469f03eb0031cfae1db94f462975a683

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