Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bc0a59904b4fef6…

MALICIOUS

PDF

34.5 KB Created: 2021-06-18 01:43:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 48d7396a344993409aeecd33d3c36108 SHA-1: 1c592f3ee2c5c64465fc0d9410503a836932fd86 SHA-256: 1bc0a59904b4fef6bd8dca132475c569a0ac8fd0341708dc6664d492dd2db3f9
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.co/app/431946152/what-is-the-best-free-roblox-exploit-game-hack PDF link annotation
    • http://kfz-service-etp.de/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://kfz-service-etp.de/images/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/roblox-its-free-trailer_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://kfz-service-etp.de/images/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://kfz-service-etp.de/images/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • http://kfz-service-etp.de/images/how-to-get-clothes-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://kfz-service-etp.de/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://kfz-service-etp.de/images/roblox-muscle-simulator-hack_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • http://kfz-service-etp.de/images/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://kfz-service-etp.de/images/cheat-engine-closes-roblox_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/roblox-robux-hack-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://kfz-service-etp.de/images/roblox-clothes-hack-2021_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://kfz-service-etp.de/images/how-to-change-your-username-on-roblox-for-free-2021_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_off00002dda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DDA 22912 bytes
SHA-256: 49f418801bc17f16e7cd1bfae28083763862cc77b19d581b78bf3c7ff119be97
font_01_sfnt_off00006153.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6153 19228 bytes
SHA-256: d0eb46ee2e9e5a7426afd1189ff1a9e1f26c9ecb4e50c36d4b910adfd08faef3

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