Malicious PDF — malware analysis report

Static analysis result for SHA-256 daf85f47b276cdae…

MALICIOUS

PDF

35.5 KB Created: 2021-07-01 05:58:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b91918c288ae0624a020bf5b8f0f942b SHA-1: 69b1765ca1e58dcb14498c6310b97db86c4d5ad2 SHA-256: daf85f47b276cdaeace61d6072db51504a9ce6a878cbdbfb50be0c43e499640e
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/roblox-promo-codes-free-robux-2021-game-hack PDF link annotation
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/robux-online_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/robloxgiveaway-xyz-roblox-hack_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/account-stealing-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/roblox-asshurt-free_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/roblux-robux-hackhacks_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-400-robux-generator_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/com-roblox_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/robux-free-ohne-telefonnummer_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/go-check-out-rob-lox-xyz-for-free-robux_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/how-to-noclip-in-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_off000032d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32D2 22068 bytes
SHA-256: af19eebfa848d63a2eda4c00620558b5bff4eb2520500a9f6baa304f985b937c
font_01_sfnt_off000063cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63CC 19780 bytes
SHA-256: 8484d552a50a5479080e7d83570c133c2826107cc9e700cff71af6815b0fe961

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