Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f20aaa3e14a11eb…

MALICIOUS

PDF

35.4 KB Created: 2021-07-02 01:27:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 508c41ebb250176063ae9a1037dd369f SHA-1: 302c91e84c79978894daf468b2a27d33f61cbc3a SHA-256: 2f20aaa3e14a11eb644dd8242f4aef5b16883e87d3f133470f8d6eb1066b619f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game items and hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn hosts multiple other PDFs, likely serving as a multi-stage lure or downloader. The document's content and embedded links strongly suggest a phishing or scam campaign aimed at users seeking in-game advantages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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.co/app/431946152/free-roblox-card-pins-2021-game-hack In PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/how-to-get-free-robux-no-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/maps-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/ex7-roblox-free-download_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/minecraft-free-online_GM479516143.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-roblox-hacks-no-download_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-skin-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/roblox-free-suit-not-deflaut_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/hack-pour-avoir-plein-de-lgendaire-roblox-bubble-gum_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/how-to-get-free-robux-2021-website_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-lua-roblox-exploit_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_off0000327d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x327D 22272 bytes
SHA-256: 5a96705c7f4464ac837798bb4a4934bbcc6b4e46097659d5a0d34ed2812a0c0b
font_01_sfnt_off0000640a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640A 19500 bytes
SHA-256: ea011e9f54823aaaa4112c1792780be602ac40600650f32c0e2bba60f1e2a93d

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