Malicious PDF — malware analysis report

Static analysis result for SHA-256 63724cbf461e6f21…

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 07:53:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f1abcd6010571b6e958c98f55780e3f9 SHA-1: 54305f649e63acba0dcd1d5bd03923b9de8e86a4 SHA-256: 63724cbf461e6f211918aa57dbb6a0ce9f004de2a5063a4321508a3fef67c5d8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn hosts other malicious PDF files. The document's content and embedded links strongly suggest a phishing or scamming attempt designed to lead users to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/hack-the-coin-master-game-hack In PDF document text
    • https://luyenthitoanpro.com/public/upload/files/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/get-free-robux-without-hacking_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/moonactive-free-spins_GM406889139.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/free-roblox-executer-purple-bunny_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/fast-robux-online_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/robux-hack-lazyassgamer_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/cheats-for-roblox-retail-tycoon_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/how-to-get-free-roblox-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/free-robux-elizabeth-songs_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/hack-tycoon-roblox_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/case-clicker-2-hack-roblox_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/roblox-is-free-to-play_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/the-fastest-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://luyenthitoanpro.com/public/upload/files/codigo-hack-para-robux-inspeccionar_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_002_off00003203.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3203 22928 bytes
SHA-256: 150bae5b3555739326dc2ed4d2c8d35e340cc9bf4b9269bc3dca663c0888bf56
font_01_sfnt_off00006573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6573 18172 bytes
SHA-256: f633a4a7e5955805ffdb42196ee4ee8b3cc7331f455ff3c39e34234a500094c3

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