Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef3302da8956416f…

MALICIOUS

PDF

34.6 KB Created: 2021-06-19 19:52:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6c1bdcf68cb172b924b19bc86120bc02 SHA-1: 3b624062a128505e2ffdfc5613b66059e1e16d40 SHA-256: ef3302da8956416f4dc1e7f0aa48c4c26ecd451a849b76512c9790244290aaa2
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/redboy-roblox-hack-download-game-hack PDF link annotation
    • http://perpus.iainkediri.ac.id/pasca/repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-app_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-robux-without-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-island-2-script-hack_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-game-free-download_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/pubg-uc-event_GM1330123889.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-dominus-roblox-tampermonkey_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/how-to-get-free-stuff-in-roblox-royale-high_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/rewardrobux-com_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-free-link-app_GM406889139.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_off00002fce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCE 22268 bytes
SHA-256: 3f6c52c417082bdbd72631e409210cd84c1baf4a90bf18e448b8d5c65b2b8d6c
font_01_sfnt_off00006146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6146 19344 bytes
SHA-256: e04f97691303a86cd9a313544fe2d4103ae1e08da226fedcc9ba0d81293bf9bd

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