Malicious PDF — malware analysis report

Static analysis result for SHA-256 a320b44f05088340…

MALICIOUS

PDF

35.9 KB Created: 2021-07-03 16:51:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a431a652ee04a06feb3525bff2164502 SHA-1: 75a36a6a5029456fd40a79b45370f99b52a529cf SHA-256: a320b44f0508834013d3990e27526cc0b36394ab1b731556715937d98ea3fdc3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to trick users into clicking malicious links. The embedded URL directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or exploits. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a phishing or scam attempt.

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/coin-master-free-spins-and-coins-without-human-verification-game-hack In PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/free-dark-egg-on-raise-a-dragon-roblox_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/free-roblox-boombox-codes_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/coin-master-hack-online-no-human-verification_GM406889139.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/el-pacmero-hack-roblox-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/roblox-hack-menu-2021_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/descargar-roblox-mod-hack-apk_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/hack-in-roblox-that-everyone-can-see_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/roblox-hack-script-download_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/minecraft-116-1-download_GM479516143.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/watch-ads-for-robux_GM431946152.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/how-to-get-free-robux-without-download-apps-or-survey_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_002_off0000333a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x333A 22968 bytes
SHA-256: abbc58d7436202a9c21fa6e98326e4ddc6f21cb533809d245d4970408c3b29b6
font_01_sfnt_off000066d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D8 19248 bytes
SHA-256: d09787106218742ca695bada48859e01aee6b927acc2a42c1706bc817617cd1f

Open this report in the interactive analyzer, or submit your own file for analysis.