Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad3710c582da52f0…

MALICIOUS

PDF

35.2 KB Created: 2021-06-20 04:26:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 7a67bb8a92acf4adcdd352e4f1113cd4 SHA-1: 4132dd4c5233e21a5da679e47a086afec9236911 SHA-256: ad3710c582da52f08f6d450dd9fc77408de0154e9201ffed555cb8698459b5f5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a critical heuristic firing for a malicious redirector link, specifically advertising a 'free generator / game hack' for Roblox. The document body reinforces this lure with a title and URL pointing to the same malicious domain. This indicates a phishing attempt to trick users into visiting a malicious site, likely to download further malware or engage in credential harvesting.

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/how-to-do-speed-hack-on-roblox-mad-paintball-game-hack In PDF document text
    • http://perpus.masda.ac.id//repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/outfit-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-often-pokemon-go-free-download_GM1094591345.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/pokemon-go-free-spoofing_GM1094591345.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-fix-elysian-roblox-hack-crash_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/youtube-how-to-get-free-gear-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-win_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-link-blogspot_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
font_00_sfnt_off0000310e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x310E 22056 bytes
SHA-256: ae0ad9917aa2b77081e9e603a5e32f6f6bdae5ac16f28a70d97181a2ac541dcb
font_01_sfnt_off000061f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F4 19912 bytes
SHA-256: ca9687facbec0002306b370b7fa402a6dbc7db61dbd73999f53c91a00bb2faf9

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