Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd7476235b919f5a…

MALICIOUS

PDF

47.2 KB Created: 2021-06-04 02:35:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 0323a8ca551a7b30b8da3b9f1cb6569f SHA-1: d3ca251bff0e91bb45c4d4924df4faf25621750b SHA-256: fd7476235b919f5a023ac0345f2fa1a8eed1efa2c0fec8854cb344559d74d0ad
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 0.9832

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 https://netcdn.online/app/431946152/free-robux-generator-2021-no-human-verification-or-survey-game-hack PDF link annotation
    • https://perpustakaan.stami.ac.id/repository/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-free-mighty-lion-card_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/roblox-old-avatar_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/win-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/pubg-uc-redeem-code-midasbuy_GM1330123889.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005522.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5522 27028 bytes
SHA-256: 7c7b6a9bb655d04c11df6bc05df22891cfaad52c9f6c081889ec90cc24bd766c
font_01_sfnt_off00009200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9200 19556 bytes
SHA-256: 76adbda1d3e57e3064df3e292cf485a94c26c1a96e5d3a4e3c484cd1a4e129d0

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