Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1611df72818c9c4…

MALICIOUS

PDF

35.3 KB Created: 2021-07-06 09:43:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 61c5a56d2f455d8de7317c8b49ff7a92 SHA-1: 1ca5bbba4beb22a09a56e4e405b35d25b8a43547 SHA-256: d1611df72818c9c4766863783d443e9d5a6ef351fcd1160341312a87faf5b1e7
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 http://netcdn.tw/app/431946152/how-to-get-free-robux-without-verifying-2021-game-hack PDF link annotation
    • http://africanearthgroup.com/uploads/files/files/free-robux-without-having-to-download-anything_GM431946152.pdfIn PDF document text
    • http://www.africanearthgroup.com/uploads/files/files/coin-master-download_GM406889139.pdfIn PDF document text
    • http://www.africanearthgroup.com/uploads/files/files/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
    • http://africanearthgroup.com/uploads/files/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://africanearthgroup.com/uploads/files/files/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
    • http://africanearthgroup.com/uploads/files/files/como-hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://africanearthgroup.com/uploads/files/files/how-to-get-50-robux-free-2021_GM431946152.pdfIn PDF document text
    • http://africanearthgroup.com/uploads/files/files/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • http://www.africanearthgroup.com/uploads/files/files/trurkey-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.africanearthgroup.com/uploads/files/files/free-robux-hack-no-survey-no-download-2021_GM431946152.pdfIn PDF document text
    • http://www.africanearthgroup.com/uploads/files/files/coin-master-hacks-to-get-spins_GM406889139.pdfIn PDF document text
    • http://www.africanearthgroup.com/uploads/files/files/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://africanearthgroup.com/uploads/files/files/google-moon-active_GM406889139.pdfIn PDF document text
    • http://www.africanearthgroup.com/uploads/files/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.africanearthgroup.com/uploads/files/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://africanearthgroup.com/uploads/files/files/packetofworld-com-free-robux_GM431946152.pdfIn PDF document text
    • http://africanearthgroup.com/uploads/files/files/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://www.africanearthgroup.com/uploads/files/files/roblox-free-download-for-windows-8_GM431946152.pdfIn PDF document text
    • http://www.africanearthgroup.com/uploads/files/files/how-to-earn-free-robux-on-blox-land_GM431946152.pdfIn PDF document text
    • http://www.africanearthgroup.com/uploads/files/files/how-can-you-get-free-robuxs_GM431946152.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
font_00_sfnt_off00002faf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FAF 22384 bytes
SHA-256: b32ad3884f4062a0b4c889b1f6ddf870e7eec8aa53a063abe6bc2a8eef84b5ff
font_01_sfnt_off00006196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6196 20184 bytes
SHA-256: da7d406aba47eea6317da3ede96973437af681d442b83efbb40dfbc95f86b21f

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