Malicious PDF — malware analysis report

Static analysis result for SHA-256 c982888edcd2ade2…

MALICIOUS

PDF

34.6 KB Created: 2021-06-29 05:01:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9e99eb334dada865100e4b4b26461df0 SHA-1: 3575ec571ef6f26d6cbf61c2bf1da3235d722629 SHA-256: c982888edcd2ade285cf5944c13922291d3ac7d99b67a75fe0de79760d252ba8
162 Risk Score

Malware Insights

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

This PDF document employs social engineering tactics, specifically a 'ClickFix' lure, to trick users into executing commands. It presents itself as a game hack generator, directing users to a URL that likely hosts a malicious payload. The document instructs the user to copy and paste content into a terminal or the Run dialog, a common method for bypassing macro restrictions and executing arbitrary code.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/pet-trainer-roblox-hacks-game-hack PDF link annotation
    • https://goodtools.tw/upload/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-working_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/hack-fly-roblox-2021-may_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-city-free_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-speed-hack-in-swordburst-2-in-roblox_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/pubg-uc-4all-cool_GM1330123889.pdfIn PDF document text
    • https://goodtools.tw/upload/files/donating-free-robux-live_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-roblox-money_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-100-free-spins-on-coin-master_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
stream_002_off00002eb6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EB6 22952 bytes
SHA-256: 2d52729bb33c1034a5f021f9f54e075b0dd5f9d62d0f7fd2b7803faeda2f313c
font_01_sfnt_off00006255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6255 19032 bytes
SHA-256: f6b7c9c37a47a7c542226842fcd41777deae8b1385b46f30401912631fb96cd8

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