Malicious PDF — malware analysis report

Static analysis result for SHA-256 460eb6ae3563ae2b…

MALICIOUS

PDF

44.6 KB Created: 2021-05-12 14:28:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a1604707ed6334ee34ff0382991e8cae SHA-1: e625700f78591ad396e63b9dfb583e5bd867baa4 SHA-256: 460eb6ae3563ae2b76481627fecd59ed987327d983986feb0fbdedebd02587f6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic firing for linking to a game hack redirector, specifically pointing to a URL designed to lure users. The ML classifier also flagged the PDF as malicious. While no scripts were extracted, the embedded link itself is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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 https://netcdn.xyz/app/406889139/coin-master-ios-gods-hack-game-hack PDF link annotation
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/roblox-com-r_GM431946152.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/roblox-devil_GM431946152.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/roblox-imagine_GM431946152.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-400-spins-coins-master_GM406889139.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-master-free-raid-link_GM406889139.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a5c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A5C 24768 bytes
SHA-256: 1dcea57aec83c24bfb85219bf2bb52a2f44ee534b2e5c92c3d64257c9e5664fe
font_01_sfnt_off0000831b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x831B 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008ccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CCC 17888 bytes
SHA-256: d8eea4be3fc99e1ecb7ba73b2b91be59596119d2ac4c670f115fb590b846a8a2

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