Malicious PDF — malware analysis report

Static analysis result for SHA-256 3343703f52b456f1…

MALICIOUS

PDF

45.6 KB Created: 2021-06-03 04:29:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 52a2dd8931f0f98a55bc5640383a2201 SHA-1: 4b321eb4aba8413e7951f0b8c1886a8d8d99bd03 SHA-256: 3343703f52b456f10859f76515b602ef899926b2c980360855b285065e34a32b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to websites that are flagged as malicious redirectors, specifically promoting game hacks and cheats. The document body and embedded links suggest a lure to trick users into visiting these sites, likely to download further malware or engage in fraudulent activities. No scripts were extracted, but the presence of malicious URLs and the nature of the lures strongly indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.online/app/431946152/roblox-paintball-by-daxter33-level-hack-game-hack In PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/free-roblox-money-codes-2021_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/krnl-roblox_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/coin-monster_GM406889139.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/robux-redeem_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/minecraft-education-free_GM479516143.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/real-free-spins-for-coin-master_GM406889139.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_off000053e3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53E3 24732 bytes
SHA-256: b2f9262445000b2ceb270c81f2c5e0cc01861a60ecd94df9d122499b9845f601
font_01_sfnt_off00008cf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF7 19196 bytes
SHA-256: 5486ce0bc814b14c0394b4af47144239d894dd2a02c35cbb91f1d28fc7480068

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