Malicious PDF — malware analysis report

Static analysis result for SHA-256 2960d19c47606b3b…

MALICIOUS

PDF

35.1 KB Created: 2021-06-20 23:52:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 14ef81f089245c978598c4159dff2225 SHA-1: 9ec4c1cb0aaf77d04af8aea12c75b0db679f8708 SHA-256: 2960d19c47606b3bb12cc4a7b3e3dd8b222743ac29ce0433fab8400c67f0e391
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that lead to a malicious redirector, disguised as a generator for free in-game items. The document body and heuristics indicate a lure for game-related cheats or currency. The primary malicious URL identified is http://netcdn.co/app/431946152/how-get-free-skin-in-cs-go-roblox-game-hack, which is flagged as a malicious redirector.

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.co/app/431946152/how-get-free-skin-in-cs-go-roblox-game-hack In PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/free-robux-tech_GM431946152.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/free-robux-app_GM431946152.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/how-to-get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/how-to-get-free-robux-regular_GM431946152.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • http://rt9.rspo.org/ckfinder/userfiles/files/roblox-com-robux_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
font_00_sfnt_off00003158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3158 22548 bytes
SHA-256: 15cb10e309af0b91ff38c0a3ac039bef98af12187903c4de1bd4b1a8818cdacb
font_01_sfnt_off000063a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A5 19208 bytes
SHA-256: 32713cf567c5b2f47ee18fc3fcb024812ed8cd385d3fef41a5040d1ec4c1d14e

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