Malicious PDF — malware analysis report

Static analysis result for SHA-256 66523996e75d25db…

MALICIOUS

PDF

47.8 KB Created: 2021-06-03 07:27:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 154fe8b488bbdddc62008c5eab649921 SHA-1: 962832467b74c58e65f28ba652f01207c57f9bf4 SHA-256: 66523996e75d25db26ab4c6e42488207784ac46a73662ceabd4ae05b635c6756
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. 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 0.9769

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/479516143/play-minecraft-pocket-edition-for-free-game-hack PDF link annotation
    • http://librarysenior.com//repository/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/robux-now_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://librarysenior.com/repository/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/collect-robux_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/pubg-uc-yatr_GM1330123889.pdfIn PDF document text
    • http://librarysenior.com//repository/roblox-free-followers_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/roblox-group-free-robux_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005503.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5503 25020 bytes
SHA-256: 1cef3c498541892f24003712557348a58aa08ac441f86c1bea7da6d3924260c8
font_01_sfnt_off00008dd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DD7 2820 bytes
SHA-256: e5f6ec650849eefe6bc6a1649c2875ce35328d23e4196945bba66cc43e5a49d4
font_02_sfnt_off00009776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9776 18460 bytes
SHA-256: 6c649d819020132e6c1bf6337a465c0b09cd39993cd953cd91e9ee42e31cc7d9

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