Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f449ec32a4448d…

MALICIOUS

PDF

45.5 KB Created: 2021-06-09 06:32:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 68d310710d41bf96025cc39b99732078 SHA-1: 8bdb31cc1d66ffc6b163a724a3836a226e421e7d SHA-256: 07f449ec32a4448d2c12d04f6e07a69d6f354fb0ba9f5311d7e63e7a6c0db36f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and currency to entice users. It contains embedded links that direct to known malicious redirector infrastructure, specifically 'https://netcdn.tw/app/431946152/free-roblox-proo-codes-game-hack'. The document body and heuristics indicate a social engineering tactic to drive users to potentially malicious websites. No scripts were extracted from this sample, limiting the analysis of further execution chains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/free-roblox-proo-codes-game-hack In PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/pubg-uc-with-paypal_GM1330123889.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/fast-robux-online_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/robux-generator-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/how-to-get-free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/roblox-toys-codes-free-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/coin-master-strategy_GM406889139.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005509.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5509 25296 bytes
SHA-256: a29f306b11d7f6a2a8d568ac67a86f93e0ebe35bfa065d15fd9f6102a8c99c10
font_01_sfnt_off00008f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F66 18276 bytes
SHA-256: 18903c264028f4ddd3f778b4015192a2935a062b84f38be0a475f203ca181010

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