Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d79a556bb5fa1b3…

MALICIOUS

PDF

44.4 KB Created: 2021-05-13 15:17:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4ead723ca393c38c58e45b6063cd12f0 SHA-1: c5654a54216ef605d211b447e8ee1b309c35344e SHA-256: 9d79a556bb5fa1b30560aaa5ffea3e5d15f03ffdfc1e57c1c0a0b4a42fca93a8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as game hacks and generators. The primary lure URL is https://netcdn.xyz/app/406889139/how-to-o-get-free-coin-master-spins-game-hack, which is designed to trick users into downloading further malicious content. No scripts were extracted, but the presence of multiple malicious links strongly indicates a phishing or social engineering attack.

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 https://netcdn.xyz/app/406889139/how-to-o-get-free-coin-master-spins-game-hack In PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-gift-links-2021_GM406889139.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/inappropriate-roblox_GM431946152.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/cm-spin-link_GM406889139.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/easy-roblox-today_GM431946152.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • https://densel.denpasarkota.go.id/new/public/ckfinder/userfiles/files/real-robux-generator_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_off00004cda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CDA 28420 bytes
SHA-256: 6b2b3c206e4cb9ddebfb3b72d14c1cb131f2ce09039c57f20830c934e34cee87
font_01_sfnt_off00008c0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C0D 18052 bytes
SHA-256: 1a49309645179e5aa03d30e235780e1615dc0ec238564b82d4d907f08b29e71b

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