Malicious PDF — malware analysis report

Static analysis result for SHA-256 b56e9ffec6e36937…

MALICIOUS

PDF

44.8 KB Created: 2021-05-16 06:47:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4109a5fd45df5dab89c22ebe349abfbc SHA-1: 201a51d35ad69f6b21ee97227f1e8a0a05e77f53 SHA-256: b56e9ffec6e3693755b78ed2e0bbb56e898fb87d5dc0cacdc0fab36030a783d4
82 Risk Score

Malware Insights

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

The document exhibits characteristics of a ClickFix social engineering attack, instructing the user to execute a command or click a link. The embedded URLs, such as 'https://netcdn.xyz/app/479516143/is-minecraft-free-on-nintendo-switch-game-hack', likely lead to a malicious website or download. While no scripts were explicitly extracted, the PDF structure and heuristics suggest an attempt to trick the user into user execution via a malicious link, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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/is-minecraft-free-on-nintendo-switch-game-hack
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/free-spins-coin-master-blogspot_GM406889139.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link_GM406889139.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/roblox-catalog-free_GM431946152.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/free-spins-coin-master-unlimited_GM406889139.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021-today_GM406889139.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/how-can-you-get-robux_GM431946152.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/roblox-builders-club-free_GM431946152.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-download_GM406889139.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/www-free-robux_GM431946152.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/games-that-give-free-robux_GM431946152.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/free-spins-coin-master-hack-2021_GM406889139.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/offers-for-robux_GM431946152.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/master-coin-hack_GM406889139.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/cheating-hacks-for-coin-master_GM406889139.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification_GM431946152.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/coin-master-fan-page-free-spins_GM406889139.pdf
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/coin-master-hacks-xyz_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e39.bin
f4278ff3db332c5961c670ae356080bdba783bbff958a3566bfd55f883c1b0c7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E39 28528 bytes
font_01_sfnt_off00008d40.bin
88833f0f37aaf816a00c97530fc90e87f2df28a22611e5c00792867ae98cdb6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D40 18212 bytes

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