Malicious PDF — malware analysis report

Static analysis result for SHA-256 74dafa497be43156…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 15:26:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 479975da4113a654b1a33ec93e8f791c SHA-1: b09b8b2dc1637b93843c5fed0695388d1201c0a1 SHA-256: 74dafa497be43156ce34542ec6a86a5b3e709b46845dec5654f220350a1e9c9a
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/cute-free-roblox-outfits-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/free-robux-account-generator_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-groups_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-caveman-simulator-hack-script_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-without-human-verification-and-no-sureys-or-downloads_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hack-someone-on-roblox-and-steal-their-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hack-download_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-high-vis-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-free-play-without-download_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-2all-site-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-stuff-on-roblox-xbox-one_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_off00002fc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC7 22520 bytes
SHA-256: b6a22095101259d0dc2a7c33e160240fa546b87c4e7f1113c2ef250ad4bd4ac5
font_01_sfnt_off00006203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6203 19012 bytes
SHA-256: 95d501f7148a0fa1d68d5ad1c68c7fffa2b97c0fe2e32f082608f9966088e773

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