Malicious PDF — malware analysis report

Static analysis result for SHA-256 58341bb32b3af055…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 03:30:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 6567d0844f9a92ec2e29e99a52ad7b44 SHA-1: 6a2824787207829036f7b3179c10856cc4f0da26 SHA-256: 58341bb32b3af0552c9624c8223d34a0cd8fc257c7f39f39bbd83ca70d8b1ab9
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/hack-coin-master-dzooka-game-hack PDF link annotation
    • https://learnwmf.org/image/data/files/easy-ways-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-robux-now-today_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-roblox-logo_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/roblox-hack-gui_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-robux-inspect-no-waiting_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-hack-in-roblox-using-cheat-engine_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-hack-roblox-accounts-on-mobile_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-catalog-items-roblox-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_off00003193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3193 22868 bytes
SHA-256: b5e255022fea5c1f1dbb0b05bfbea73974c8b2f870b73de1413fc5fab850bc55
font_01_sfnt_off000064a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A2 18252 bytes
SHA-256: cb34c00e22f4fb04ecd8dba51ce5014289f907e7ee26b06f608f45da10f54c4d

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