Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec14d133d0217711…

MALICIOUS

PDF

42.1 KB Created: 2021-05-15 06:20:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4dbaa7b5e332cee269bb103ed09e899b SHA-1: 803569a78dbadc35233122648a299708c87b9886 SHA-256: ec14d133d02177111c6bfe1b13a5b76a6bd4e1653d24706313af0c3dab14aaed
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on what appears to be a game hack generator. These links redirect to malicious infrastructure, which in turn hosts further PDF lures. The primary malicious link identified is https://netcdn.xyz/app/406889139/como-hackear-el-juego-coin-master-game-hack. The document body and heuristics indicate a social engineering tactic to trick users into downloading potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/como-hackear-el-juego-coin-master-game-hack In PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/coin-master-online-hack_GM406889139.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/roblox-cheat_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/coin-master-70-spin-link-2021_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004967.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4967 24888 bytes
SHA-256: e20c2f9dcb73db190cdaee078be1adc45dec683389a8deb8aed4f43ad0b12096
font_01_sfnt_off0000812b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x812B 18644 bytes
SHA-256: d3c511751d4884b0e0ce286b66e2a6449449325efd521a4fb279194b2f80a8bb

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