Malicious PDF — malware analysis report

Static analysis result for SHA-256 be7dce1e38a5837a…

MALICIOUS

PDF

44.8 KB Created: 2021-05-14 13:03:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 62afc7a42581addaee2e926f117cb64e SHA-1: bf415f551741267e0e03272f502a2c7050198b54 SHA-256: be7dce1e38a5837a99eaf3c49b6d1cecaefb318d0fb9fd09df11dfb7a3400ea6
82 Risk Score

Malware Insights

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

The sample is identified as malicious by an ML classifier and contains heuristics indicating a social engineering attack (ClickFix). The document body and embedded URLs suggest a lure for free game hacks, likely to trick users into downloading further malware. The presence of external URLs indicates an attempt to download a second-stage payload.

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/minecraft-mobile-free-game-hack
    • http://baofrance.com/images/free-robux-mobile_GM431946152.pdf
    • http://baofrance.com/images/free-coins-and-spins-coin-master-2021_GM406889139.pdf
    • http://baofrance.com/images/how-to-get-free-robux-without-offers_GM431946152.pdf
    • http://baofrance.com/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdf
    • http://baofrance.com/images/coin-master-link_GM406889139.pdf
    • http://baofrance.com/images/coin-master-hack-activegamer_GM406889139.pdf
    • http://baofrance.com/images/hack-minecraft_GM479516143.pdf
    • http://baofrance.com/images/how-to-get-free-robux-for-real_GM431946152.pdf
    • http://baofrance.com/images/microsoft-rewards-roblox_GM431946152.pdf
    • http://baofrance.com/images/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdf
    • http://baofrance.com/images/free-robux-on-phone_GM431946152.pdf
    • http://baofrance.com/images/free-roblox-outfits_GM431946152.pdf
    • http://baofrance.com/images/how-to-get-free-robux-no-verification-2021_GM431946152.pdf
    • http://baofrance.com/images/buy-robux-free_GM431946152.pdf
    • http://baofrance.com/images/roblox-script-hacks_GM431946152.pdf
    • http://baofrance.com/images/coin-master-free-spin-daily-bonus_GM406889139.pdf
    • http://baofrance.com/images/coin-master-coins_GM406889139.pdf
    • http://baofrance.com/images/moonactive-free-spins-coin-master_GM406889139.pdf
    • http://baofrance.com/images/free-minecraft-wallpaper_GM479516143.pdf
    • http://baofrance.com/images/free-robux-survey_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d29.bin
1395f248c5065ca04ee9fdfade920aa8a8e13f1cf4e1395f74a0cedab1d868df		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D29 31740 bytes
font_01_sfnt_off00008e09.bin
ce10a2b2c496b69fcf76f31cd4916c063e1dd9befde4055646c3ea28f41e8e8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E09 17944 bytes

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