Malicious PDF — malware analysis report

Static analysis result for SHA-256 86e139ce84d63a55…

MALICIOUS

PDF

34.1 KB Created: 2021-06-29 04:14:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 2ef425928ffd83e50add9fd1dd7e30b6 SHA-1: 6947624b7b8403882eb209c65007912b9d888cae SHA-256: 86e139ce84d63a5543c66fe58ac2beb94ccbffe124db3663688340614b23a5c8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' lure. The document body and extracted URLs reinforce this, pointing to sites promising game-related cheats. While no scripts were explicitly extracted, the PDF structure itself can embed malicious JavaScript, and the overall pattern suggests a phishing or scam attempt to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

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/roblox-earn-robux-free-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/free-25k-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-generator-tool-paste_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-robux-hack-134_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-vip-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-free-skin_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-without-waiting-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-para-counter-blox-roblox-offensive-download_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/best-free-things-in-roblox-catalog_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-sword-art-online-burst-cheats_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/logiciel-hack-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-set-up-pf-pros-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-script_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-top-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hacker-des-compte-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-apk-hack-358_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_off00002f40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F40 22400 bytes
SHA-256: b7ac1be9bf009be6be57194bedb31a91a3a662b9aeb3d57187cce270444a76dd
font_01_sfnt_off000060f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F4 18788 bytes
SHA-256: bbe52c8ae061b26ea30d2f3d108dd7fce3fe5e0c2ccff2cb37915f9d38711058

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