Malicious PDF — malware analysis report

Static analysis result for SHA-256 76092d23dd785b2f…

MALICIOUS

PDF

35.6 KB Created: 2021-06-30 11:26:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a00d0cc5edf2c26fe8ac795db78902af SHA-1: 119d1e2bf81f0939f255a6294f882fd61cbde398 SHA-256: 76092d23dd785b2fc40c21634a6ebddc232f308d8f2a288f9041af4a8b2affd3
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/free-roblox-colouring-pictures-game-hack PDF link annotation
    • https://opac.heritagejkt.org/repository/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/robux-premium_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/pubg-uc-download_GM1330123889.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/hacks-para-roblox-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-legit-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-no-human-identification_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-do-you-hack-into-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-minecraft-account-list_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-prison-life-20-hack-download_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/infinite-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-how-to-make-free-shirts_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-roblox-wwwgeneratoronlineinfo-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/zombie-attack-hack-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-roblox-redeem-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-roblox-mods-jailbreak_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_off0000326d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x326D 22984 bytes
SHA-256: f1c266c6228d391d51acd97ca07fcb8f496ea295dabc8d6bf29aee980f6cd23d
font_01_sfnt_off000065e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E4 19168 bytes
SHA-256: e7c37d3d59c8cf863e2390fdc80dcd5a4b6c766dee6ce207729c83148a0b72b3

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