Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eddc24276c105d8…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 18:16:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: da2aa24157e92909c707afc2f9ab6a95 SHA-1: e36513bda2efdfeb7c508fa488b884508e001e64 SHA-256: 1eddc24276c105d8ea307be825f8a00c852ef089eeb97023c10f72b3de8b204b
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game generators and hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. The document body and embedded URLs strongly suggest a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 http://netcdn.tw/app/406889139/daily-coin-master-free-spin-link-game-hack In PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/how-to-get-free-robux-with-copy-and-paste_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/how-to-look-good-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/black-adidas-t-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/free-roblox-gift-cards-codes-2021-unused_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/free-animation-roblox-studio_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/roblox-hack-teleport-and-wool-and-speed_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/vortexx-roblox-free-robux-pastebin_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
font_00_sfnt_off00002fbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBB 22668 bytes
SHA-256: 452c896e872c284c9f9ccd79046652ef3a53d8e05309bb680b9a4f5ae1ddb579
font_01_sfnt_off00006259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6259 18768 bytes
SHA-256: 6995f58a3344afdf1c39eea442142c3f86a5b05fd2aa483286546d573d63d37d

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