Malicious PDF — malware analysis report

Static analysis result for SHA-256 382cb5f9671d3be9…

MALICIOUS

PDF

42.8 KB Created: 2021-05-13 03:31:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 339149e2c152c09f44bd46dfff962bde SHA-1: 600bd85fe3031cb439d6b308a042476452e66d23 SHA-256: 382cb5f9671d3be966bdb7d488159ace7cda448e7428f0d97eb8f8bc14787074
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document is designed to trick users into clicking malicious links by presenting a fake CAPTCHA and a download button, disguised as a game hack generator. The embedded links lead to known malicious redirectors and further PDF files hosted on potentially compromised domains. The document's structure and content strongly suggest it is a lure for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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
  • 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/406889139/coin-master-pc-game-free-download-game-hack In PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-codes_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/cone-master_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/oginject-co_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b4f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B4F 24892 bytes
SHA-256: 7f799ce711867fdb841d6deb4e66ece1c73152c5a43dac207fe4fe07295a925b
font_01_sfnt_off000083b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B6 18704 bytes
SHA-256: 8ce66c65e478767476711e8a187d609ec807e2903d8f7500c3ed78d36e0717ab

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