Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaf04eebebfc5b5f…

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 18:35:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d6925982e52bdd64b62e5f8859d17e6c SHA-1: 6039337e4c921c952151694b7ec8c4bfdddce172 SHA-256: aaf04eebebfc5b5f887e60f4ddaf363e27c8374970911dabcfa790052d8f893a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/free-spins-from-coin-master-game-hack PDF link annotation
    • https://perpus.uwhs.ac.id/repository/free-robux-hack-no-human-survey_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/how-to-get-free-robux-with-inspect-element-2021_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-robux-generator-without-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/robux-hack-no-download-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-robux-without-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-ip-tracker-hack_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-get-any-tool-hack_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-hacker-reporten_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/how-to-hack-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-hacked-to-rape-a-7-year-old_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-free-candy-song_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/free-robux-scams_GM431946152.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/mcpe-116_GM479516143.pdfIn PDF document text
    • https://perpus.uwhs.ac.id/repository/roblox-phone-number-free-robux_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_off00002e8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E8F 22676 bytes
SHA-256: 79e78cd906b7503ccc0856f68df9753977b245fefbca5bd49a13649174278009
font_01_sfnt_off0000614b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x614B 18432 bytes
SHA-256: 65a21218908e78d3b3e13bb6de659cda5883429e2feafaff43c4666217260e5f

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