Malicious PDF — malware analysis report

Static analysis result for SHA-256 8704695972141d72…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 13:02:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0d8d3af12899e656e4e7a1eb5fcaff82 SHA-1: 1c7bb7be5ba824cfe2ef2c5c398359f5a725a927 SHA-256: 8704695972141d723a1d7ac70b72aff045fb592da89f79f1e70cdaf4bb131432
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/431946152/how-to-get-free-robux-without-paying-game-hack PDF link annotation
    • http://library.persadabunda.ac.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/wurst-115_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-spin-hack-trick_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/assassin-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/i-want-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_off000030cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30CC 21968 bytes
SHA-256: 7505983c6f918161d276d80a4edca4ffbd1598f36f1773c45da2b79b77c90766
font_01_sfnt_off00006142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6142 19800 bytes
SHA-256: 1d61554b41e4a561f8cce96d416cb414ffdc77e661a84b072bd4f12fb61e75a1

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