Malicious PDF — malware analysis report

Static analysis result for SHA-256 4546b66abce729ce…

MALICIOUS

PDF

35.9 KB Created: 2021-07-08 19:42:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: cdcc462bcaa131478053b47f796d4a71 SHA-1: 972702199e4f3ba5f46b6f68d8ffa9ac058e2070 SHA-256: 4546b66abce729ce4a2a31c5c4e26b9a07a8481d18dd137c66a42b01cc2908fa
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 0.9980

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/free-robux-hack-no-human-verification-or-survey-game-hack PDF link annotation
    • https://library.elkatarie.ac.id/repository/free-roblox-character-codes_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/cerberus-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-bhop-hack_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-exploits-roblox-reddit_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-2021-june_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-free-robux-raffle_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/2021-hack-gui-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/200-robux-free_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/is-there-free-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/hacking-websites-for-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/get-free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-free-accounts-may-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/games-that-give-you-robux-for-free_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-hxh-id-cheat_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-generator-com-roblox-hack_GM431946152.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_off00003270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3270 22596 bytes
SHA-256: 70e29540c3f72752303a8716efae01ed053b00f5ca0f5c38ba4e722eadcef998
font_01_sfnt_off00006504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6504 19796 bytes
SHA-256: ad19e1b0895485c37a49fe02fea69dabec772aaf5d58694ea1046abdc2ebb73d

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