Malicious PDF — malware analysis report

Static analysis result for SHA-256 14a7307aa9fb95e8…

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 21:03:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 545b2c7acd838c3704f6ed9fb18711b3 SHA-1: 2ecf5316ab3432e38362b6e6059dadcee9757c00 SHA-256: 14a7307aa9fb95e86567cc199baf2a2e9cb2eb38b124e10abc7abc915e83b4cb
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 0.9983

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/coin-master-free-coins-and-spins-link-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/hack-para-romper-paredes-en-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-use-cheats-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/zero-hack-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-robux-hack-online-generator-tool_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/skype-hack-roblox-2021-jailbreak_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-plus-on-roblox-meepcity-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/www-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/electrification-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robuxlive-stream-robux-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/best-free-roblox-t-shirt_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-game-pass-for-free-roblox-youtube_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/tat-ca-cac-do-free-trong-roblox_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_off000030e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E5 22912 bytes
SHA-256: 85abfc72005bb6c256ef66b764b873e482d771e32758c98574366a9ebcbf4aea
font_01_sfnt_off0000644f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644F 18520 bytes
SHA-256: 4a00b74065c845a8261d6cc4e101dd5c2a388e973e7fc9ab28e7679a34d9d18b

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