Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7332b3d9f188902…

MALICIOUS

PDF

34.7 KB Created: 2021-06-26 02:19:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ef7f5ef949f0b92fc48c5f9aba477078 SHA-1: 638cc65812025567bcf5574850f4d93d7ee79eb1 SHA-256: e7332b3d9f188902e3d1d87796b54b0d74d256a674c0973d09220e8b36a8345a
122 Risk Score

Malware Insights

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

This PDF document contains a lure for free game currency or hacks, directing users to a malicious URL. The PDF_LAUNCH heuristic indicates an attempt to execute external content, likely leveraging a vulnerability. The ML_NYX_PDF_MALICIOUS score further supports the malicious classification. No scripts were extracted, but the embedded URLs and launch action suggest a phishing or exploit delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Launch action high PDF_LAUNCH
    PDF contains a /Launch action with an unresolved or extension-less target — treat as potentially dangerous
  • 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/rbxoffers-earn-free-robux-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-how-to-get-free-robux-on-ipad-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-coins-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-robux-please_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-iphone-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-ban-account-hack_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-cool-and-free-hat-catalogue_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-sued_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/como-descargar-el-hack-de-roblox-tools_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/launch-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-java-minecraft-free_GM479516143.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_off00003294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3294 22084 bytes
SHA-256: 1dd554ff89886bc1335b01d6a1b5e04f1d907081976fabf4dcf323a0f2895150
font_01_sfnt_off00006388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6388 18716 bytes
SHA-256: bea0310bc4bc0781e94b7b7f27f9f885491510f4f530c0825e592a398895ac1a

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