Malicious PDF — malware analysis report

Static analysis result for SHA-256 8972051bbc0e51a0…

MALICIOUS

PDF

46.0 KB Created: 2021-05-12 17:36:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6e174a46a8a837c1a56c263669c44093 SHA-1: 901f18c7fbd50c5ad8f893b46b189acb5e97cbe5 SHA-256: 8972051bbc0e51a042b9d0de791a7ed55b684d508c575880e2315b588bf6f12d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/431946152/free-roblox-clothes-girl-game-hack PDF link annotation
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/free-minecraft-packs_GM479516143.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/how-to-add-mods-to-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/how-to-get-robux_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/blox-best-robux_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://rivnepost.rv.ua/ckfinder/userfiles/files/coin-master-free-spin-link-today-16-11-2021_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_off00004a16.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A16 32476 bytes
SHA-256: b823d5947093e351a92b4d93d605d9bff8677c8009fb6df152e9c0596a6a7a0a
font_01_sfnt_off00009184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9184 18340 bytes
SHA-256: d29ec2e71bb068e77f351b4d123c990b41e31d257b9d9cf8b177703eed95a4a4

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