Malicious PDF — malware analysis report

Static analysis result for SHA-256 abeb3f643f2456fa…

MALICIOUS

PDF

36.4 KB Created: 2021-07-03 19:09:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9e7cb34224847899b08cd35e5a8eff67 SHA-1: 4e9f08058a608ddde99a8a5e03a440487a480e95 SHA-256: abeb3f643f2456fa288007436ffc771875ac08378d56b277f97094d3c890d2c1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector, specifically http://netcdn.tw/app/431946152/how-to-get-free-robux-without-offers-game-hack. The document body also contains this URL and mentions 'free robux', reinforcing the lure. While no scripts were extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site, likely for credential harvesting or to initiate a further exploit.

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-offers-game-hack PDF link annotation
    • http://www.opac.stieimalang.ac.id/repository/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-hack-revealed-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-link_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/ifninite-jump-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/ich-bin-am-hacken-roblox-name-danny-jesden_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-robux-in-1-second_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-roblox-chrome-add-on_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/its-free-roblox-id_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/does-coin-master-hack-work_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_off00003468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3468 23020 bytes
SHA-256: 7d94c9ccfdac530486b4a91bee8ae5566522477dca4a8e3cce20a60914c84d82
font_01_sfnt_off0000680f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x680F 19468 bytes
SHA-256: d293dc8b17a4ec261e56b386a82f7f63f23481516d807023c0ef4741d16fdc92

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