Malicious PDF — malware analysis report

Static analysis result for SHA-256 87c3b55d2df3006e…

MALICIOUS

PDF

45.2 KB Created: 2021-06-03 23:14:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 384a5717e781a5a877ab3ab6a70b79eb SHA-1: 42e230dc27797dfaec24885b6c95e98cdad32b55 SHA-256: 87c3b55d2df3006ec067539f2111a373ea8fc3519baca22c17c92a5424f19654
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 0.9865

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/406889139/coin-master-hack-apk-with-fb-login-2021-game-hack PDF link annotation
    • https://library.sman1berau.sch.id/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/get-robux-now_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-apk-hack-mod-download_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-daily-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-roblox-groups_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-games-like-roblox_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_off00005283.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5283 25908 bytes
SHA-256: 67a50b826f1e56408df0d396de38e1a6af4629ae6efd83c5f177bd81555ce848
font_01_sfnt_off00008af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF2 19268 bytes
SHA-256: d591f5ad7110aa19609ef018a80fe40e93938037216fd2371b00ac71978b4b83

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