Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a9cf345234921a2…

MALICIOUS

PDF

50.9 KB Created: 2021-06-08 20:53:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 6a3db62a6784d411a32d0b193a23a0d2 SHA-1: 1c03e33f5b798deacbd2cb3528b25ef269f2ebd9 SHA-256: 6a9cf345234921a258a6020d9a039b47f7b6c58854763b5eb8c8ec8ee76bcf09
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 0.9744

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.tw/app/431946152/how-to-get-free-robux-bc-only-game-hack PDF link annotation
    • http://digilib.stimlog.ac.id/repository/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-noclip-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/nuevo-hack-de-robux-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/link-for-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-java-edition-download-free_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051ed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51ED 29864 bytes
SHA-256: 545a50daac9a91cc296ac61b72c2914979435ea053c793a25638c7150074f910
font_01_sfnt_off000096fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96FC 3512 bytes
SHA-256: 20324b757bfdbc7a63958f6754c7c82dbcb7920a3ca988569b7ce35e13c50862
font_02_sfnt_off0000a369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA369 18536 bytes
SHA-256: bb0654cd8ad65f50ff836f1aa731874303f155c8c4d475082c8fcbc5ff2040ad

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