Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6ab7e66ecf0c441…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 12:51:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: ad3ea4086cae4b66d3e1a5d645bfa13b SHA-1: c145475a5d1509c265ad7cad25fb6dba6167de27 SHA-256: e6ab7e66ecf0c441bd56c598047c804f7abfd7fd95d05b8416322fcb1b5b4146
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirector lure, pointing to malicious infrastructure. The document body and embedded URLs reinforce this, indicating a phishing attempt to trick users into visiting a malicious site. No scripts were extracted, but the overall pattern suggests a phishing lure designed to lead users to potentially malicious content.

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.tw/app/406889139/www-coin-master-hack-game-hack In PDF document text
    • http://perpus.stihpada.ac.id/repository/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/free-items-you-can-get-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/how-to-cheat-in-roblox-lifting-simulator_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/roblox-apocalypse-rising-spawn-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/microsoft-roblox_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_off0000321f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x321F 23128 bytes
SHA-256: af22ca9e7592bccab6174c687fb64be6702d98891842eb4fe798a2c1aa600948
font_01_sfnt_off000065f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F5 18364 bytes
SHA-256: 56fe19c9a365f85bceb031ba69da7f92b878d4dc87b6111ff4a61486c3ab982f

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