Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcf086751b3a0f1e…

MALICIOUS

PDF

34.8 KB Created: 2021-06-30 13:44:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 61d44a6852144dc0053cd2aeaaee2e6c SHA-1: a224d8308db6acac51b73901fe5a2c6378958fec SHA-256: bcf086751b3a0f1e9def78de8be2a4b3772c669d6b33b2b92c0c9692d7b992ca
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it is a lure for game hacks, specifically targeting Roblox. It embeds multiple URLs that likely lead to malicious content or further redirection. The ML classifier strongly flagged this PDF as malicious, suggesting a high likelihood of a malicious payload being delivered through these links.

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/startingploit-roblox-hack-game-hack PDF link annotation
    • http://perpus.fisip.unnur.ac.id/repository/free-roblox-card-codes-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-heaven-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/get-free-followers-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/robux-rewards_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/kid-cheating-on-roblox-girlfriend_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-bypass-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-roblox-scripting-videos_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/get-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-free-shirt-creator_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/best-roblox-hair-free_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/poki-with-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/how-to-get-free-robux-in-alternate-route_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_off00003467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3467 21416 bytes
SHA-256: 8e748f597fe2cf28a32c6488e7d97cd46927315bdbf02e73a5e919cb8423a5fc
font_01_sfnt_off000062ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EF 19056 bytes
SHA-256: faf073276adfd122bf0f8269869d799364e6ff9cb6e71f6f1e7f94a53b012ac4

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