Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a59b2cb7fa411c…

MALICIOUS

PDF

34.1 KB Created: 2021-06-30 05:18:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 366ffa8ce1ef02de0a6d183a47fa407b SHA-1: 139e49eb7318538347285c0fd43579ca6ef020ac SHA-256: 89a59b2cb7fa411cbc5d5907677f566bad2a9a3b2771ab10a130d1a398ee7c95
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.co/app/431946152/roblox-build-a-boat-hack-game-hack PDF link annotation
    • http://perpustakaan.iahntp.ac.id/repository/youtube-how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/pokemon-go-free-movement_GM1094591345.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/how-to-get-free-items-on-roblox-2021-no-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/stickmasterluke-free-robux-obby-link_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/roblox-se-puede-hackear_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-faces-roblox-avatar-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/how-to-get-free-outrageous-builders-club-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-spins-on-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/free-robux-generator-group_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/stream-snipe-hack-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/how-to-hack-cbro-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/download-roblox-clothes-free-online_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/if-you-join-this-game-you-get-hacked-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/roblox-players-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/public-enemy-sun-prairie-coin-master-free-spins_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_off00002de8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE8 22444 bytes
SHA-256: d079b00f1a4e56f894ba591108012b2671cb66c6af64b13ccb0cf085ef5cc94d
font_01_sfnt_off00005fdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDD 19196 bytes
SHA-256: 852f6942baa9dc23f9d04e6701246ba3459b6a407da0ea8778e1d0f169f61b0c

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