Malicious PDF — malware analysis report

Static analysis result for SHA-256 85a86a427ea1e614…

MALICIOUS

PDF

45.5 KB Created: 2021-06-13 19:43:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7eac6e7311a2b2bf7651a55aad9cca2f SHA-1: 500b345ab253deb5b7dbf8076d465eb51ba0cc2d SHA-256: 85a86a427ea1e614fd6f544a4d17b3da1800049e97289907278e75901279eed5
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.co/app/431946152/prestonplayz-roblox-hack-game-hack PDF link annotation
    • http://brokermortgages.com/images/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/i-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/game-hacked-decal-roblox_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://brokermortgages.com/images/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • http://brokermortgages.com/images/hacks-minecraft_GM479516143.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_off00004a59.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A59 30240 bytes
SHA-256: 8984e21cdb2f3f925034902180885e4d1b930ced1b1967229c3dba22d0a3ff96
font_01_sfnt_off00008dae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DAE 18876 bytes
SHA-256: 57e0e304d09c90248d38a9900aa580a381665525a920f2e0df4c00951b15a9a9

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