Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eed819bb3c2ecba…

MALICIOUS

PDF

33.8 KB Created: 2021-06-26 02:56:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f714858e49acff8921812c3f04179a13 SHA-1: 140aafba9b520e3c129e310d87398c95b04b7dcc SHA-256: 1eed819bb3c2ecba579f6cda627da3d42039befb97e8173812e669aaf572dd2e
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.co/app/431946152/murder-mystery-roblox-hacks-game-hack PDF link annotation
    • http://elibrary.perludem.org//repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-le-robux-site_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-unboxing-damage-hack_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-skin-editor-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-free-tuxedo_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/new-cheat-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/mega-cheat-robloxcom_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-a-free-dominus-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-counter-blox-cheats_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-generator-that-really-works_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-free-admin-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/cheat-in-roblox-free-robux-pc-no-verification_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-free-character-maker_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_off00002de5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE5 21688 bytes
SHA-256: 7f5b4f6f7965c6222e947c0b1c237c15ee21995e179584f66bc383bb00c4a691
font_01_sfnt_off00005d7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7F 19448 bytes
SHA-256: 540c6e39200c2900f19cbfb504e22fc52c121fcd60eee955b26dc7151c54ac6d

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