Malicious PDF — malware analysis report

Static analysis result for SHA-256 c74c1873a5d638a8…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 11:59:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 34f4cfa875bcf090f921b5df438c56e0 SHA-1: 4ec78c140de7869987c825a7a0b65e602bdcf77b SHA-256: c74c1873a5d638a84813b26b5bde8d52129827576accf8da0924ded992442259
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/479516143/minecraft-gun-mod-download-free-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/unjailbreak-hack-roblox-descargar-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-hack-revealed-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-hacks-for-star-wars-awakening_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/script-hack-roblox-piece_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-diamond-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-without-no-verification_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hacks-para-roblox-dragon-ball-rage-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/codes-to-get-free-robux-may_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-1million-robux-for-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-anarchy-server-no-hacks_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/synapse-roblox-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-crc7-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-2021-feb-eazy_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
font_00_sfnt_off000034c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34C2 22240 bytes
SHA-256: 44db55fe841d87b9b9d72155123e2c95cc47fa73ea5a654bbaf8360ff39b38a1
font_01_sfnt_off00006631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6631 18720 bytes
SHA-256: c40eb1edf819727d779fcdd46a1a495425ff69d655ae06a101e79a8dd4ff089a

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