Malicious PDF — malware analysis report

Static analysis result for SHA-256 4678ee6096baaf62…

MALICIOUS

PDF

44.5 KB Created: 2021-06-03 05:54:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 33108252c8b04766fcd40da5faeb0a5f SHA-1: 5e753b2dce24b3a4585cefb47cb86affd0d74b9b SHA-256: 4678ee6096baaf62b3522e8a15e1f493dd0f94bb0e29c38accdbc717a1995431
162 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses a ClickFix paste-and-run lure and a clipboard-command (paste-and-run) lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/479516143/free-minecraft-education-edition-game-hack PDF link annotation
    • http://library.patria-artha.ac.id/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-villages_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/robux-for-offers_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-robux-easy-hack_GM431946152.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_004_off000054c9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54C9 24464 bytes
SHA-256: 74c1f408ecc079d62b087ef5566072d29c566fb14ebf2d2703fba1cf2f35052d
font_01_sfnt_off00008c3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C3C 18024 bytes
SHA-256: e9a2cf0d2823e90ed2580a45ee363d6e1f35a4f9b450f06c249245a562ddb1b9

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