Malicious PDF — malware analysis report

Static analysis result for SHA-256 b05262df1cdf2ca1…

MALICIOUS

PDF

34.7 KB Created: 2021-06-29 17:09:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 75e69ee293febee05d18577d5ae740db SHA-1: 19b90238bf8ce349ae44c5fd31477c08625b550e SHA-256: b05262df1cdf2ca177f86920f582bb53ed268ba60a8d3176008c6fa762638c2e
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.003 Windows Command Shell

This PDF document employs social engineering tactics, specifically a 'ClickFix' lure, to trick users into executing commands. The document body and embedded URLs suggest a lure related to obtaining free in-game currency for Roblox, which is a common pretext for malware distribution. The heuristics indicate the user is instructed to copy/paste content into a shell, likely to download and execute a second-stage payload from the provided URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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 http://netcdn.co/app/431946152/how-to-get-bc-for-free-on-roblox-2021-game-hack PDF link annotation
    • http://perpus.ftunismabekasi.ac.id/repository/cheats-roblox-highschool_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-android-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-training-free_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-tiktok-coins-2021_GM835599320.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-clothes-roblox-no-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-roblox-death-sound-ringtone_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-promo-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-cheat-on-roblox-obbys_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/como-hackear-los-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-add-roblox-lua-to-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/claim-coin-master-free-spins_GM406889139.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_off000030bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BC 22072 bytes
SHA-256: f5f989606fc4524d848f59beb44c4dfb29c212fae92b135edc77c97d08adf15c
font_01_sfnt_off00006180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6180 19320 bytes
SHA-256: 63763cfa06b09b072f3347978871235c1f79344eea0c9e26b7f8c74161c1b157

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