Malicious PDF — malware analysis report

Static analysis result for SHA-256 efb07e6184290a74…

MALICIOUS

PDF

43.8 KB Created: 2021-06-04 01:21:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 09129865d980715def58cb76fed79079 SHA-1: 15ad3d3f382e9eb09afbf740563f8a08c7ced564 SHA-256: efb07e6184290a742883525f67c502e5ee35574384ba31b19800e646d472a033
82 Risk Score

Malware Insights

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

The document uses social engineering tactics, presenting a lure for free in-game items to trick the user into clicking a link. The heuristic 'SE_CLICKFIX' indicates the document likely instructs the user to execute a command, bypassing typical macro restrictions. The primary IOC is the URL pointing to a download, which is likely the malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/479516143/free-minecraft-capes-no-mods-game-hack PDF link annotation
    • http://digilib.stie-yppi.ac.id/repository/pokemon-go-free-mewtwo_GM1094591345.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/tiktok-free-like-and-views_GM835599320.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-spins-for-free-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/pubg-uc-180_GM1330123889.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • https://discord.ggIn 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_004_off000050b4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50B4 25028 bytes
SHA-256: 05db7dbf711bb8a92e0cec12b19e4e9bae9dd088f57484639712ac09e9679578
font_01_sfnt_off00008951.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8951 18060 bytes
SHA-256: d2580fb4aafe993e5dab330080fdbce20cb4b143aeb227db28560abf8afc6474

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