Malicious PDF — malware analysis report

Static analysis result for SHA-256 c469c8e8af6ecb74…

MALICIOUS

PDF

46.5 KB Created: 2021-05-14 21:51:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 99e48f51d76034d0eede23c6c6d19b72 SHA-1: ad275907ea8d68319c75bc77c96022cfe9c322e1 SHA-256: c469c8e8af6ecb74ec091ce5e462f4bd76d88c7ca05b865426702593f851d14f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, disguised as "free generator / game hack" lures. These links likely serve as a delivery mechanism for further malicious content, potentially exploiting the PDF's embedded JavaScript capabilities. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-free-spins-link-2021-download-game-hack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/coin-master-free-spins-link-2021-download-game-hack In PDF document text
    • http://regiefranchet.fr/userfiles/files/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/free-robux-come_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/coin-master-hack-tool-v1-9-apk_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/free-coins--spins-coin-master_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/coin-master-online-free-spin_GM406889139.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_003_off00004a1c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A1C 25440 bytes
SHA-256: 4ef0a2e58fa103e878cf5d3d74d188fcedd0001c5519e57e52da60390121ecd7
font_01_sfnt_off000085a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85A9 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off000090d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90D3 19036 bytes
SHA-256: e0f8480fa6793c91ec869da5acb64ee4c254eeaf21d467085c584c7dc5eb632a

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