Malicious PDF — malware analysis report

Static analysis result for SHA-256 c26ee8b1fd439f0a…

MALICIOUS

PDF

34.8 KB Created: 2021-06-27 08:33:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2999585381a2dd955d900bce3ae4303a SHA-1: 7efddaaa8bd9d0ed9e54393646e8dca41a530f5b SHA-256: c26ee8b1fd439f0a8bdc95cf07328940b9b2f0b6d179350e850b85f4f4d44522
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, specifically designed to lure users with promises of game hacks and free currency. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting. No scripts were extracted, but the PDF's structure and embedded links are indicative of a malicious lure.

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/de-roblox-hack-p-game-hack In PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/robuxmatchcon_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/how-to-get-free-robux-by-inspecting-2021_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/vip-roblox-free_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/admin-commands-roblox-free-download_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/robux-free-com_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/how-to-change-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/easy-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-roblox-cards-for-100_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
font_00_sfnt_off000030cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30CB 22556 bytes
SHA-256: e62a836a4d9ab79f684eba1939d3225fe175ea09ca520d56b351989fd5f2b1eb
font_01_sfnt_off0000630e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630E 18980 bytes
SHA-256: 85e26eea9a22e2cf86458afe17ed92343f3d67695ef9839884c8760fef6fd6fe

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