Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcef078434673404…

MALICIOUS

PDF

46.4 KB Created: 2021-05-13 12:33:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5bb2a92d53472d18324cd278b8482681 SHA-1: c741dd572df754420ba8c7387d50dce18d63d066 SHA-256: fcef078434673404021cd7cd92c3a5c8483cd01df8c1b7303a29c43622d892b7
82 Risk Score

Malware Insights

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

The sample is a PDF that contains a lure related to 'making a server in Minecraft'. It includes a high-confidence heuristic indicating a ClickFix social engineering attack, instructing the user to press Win+R or paste a command into a terminal. This suggests the document is designed to trick the user into executing a malicious command, likely to download and run a second-stage payload from one of the embedded URLs. No scripts were extracted, but the presence of embedded URIs and the ClickFix heuristic strongly indicate a malicious intent to lead the user to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/how-to-make-a-server-in-minecraft-java-for-free-game-hack PDF link annotation
    • https://www.apartmani-mestrovic-krk.hr/files/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/how-to-hack-coin-master-game-without-verification_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/get-more-robux_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.youtIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004af4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AF4 29296 bytes
SHA-256: 68fc723171bd5b41d84b5c954e458394dedbe3b8e85e06a169a604594cea081f
font_01_sfnt_off00008857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8857 3092 bytes
SHA-256: 3811f2fb1880daf4953efcc9c7427d9b438bced237490b00be4a6ec3ecea79e0
font_02_sfnt_off00009301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9301 18324 bytes
SHA-256: 9279d0b6186d29dee92c92ea41ad607c96b6d67fd8c4a148fb7dbd95f22d9888

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