Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bcf62194d6b95e1…

MALICIOUS

PDF

35.2 KB Created: 2021-06-30 02:57:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9de05458cf9be8087bb87d13f146673a SHA-1: 2e3024dd891f471070b61f1be536d1ef413b0038 SHA-256: 4bcf62194d6b95e11f1e641451b4398a9363710f0d49544a120542b0257cc0a9
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, forming a link farm, that direct users to websites offering 'free Robux' or 'Coin Master hacks'. The ML classifier strongly indicates maliciousness, and the presence of external URIs suggests an attempt to redirect users to download potentially harmful content. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/431946152/100-real-free-robux-game-hack PDF link annotation
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-without-verify_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/can-you-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/easy-hacks-to-get-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/speed-hack-roblox-app-engine-64-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-generator-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-a-free-shadow-dragon-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/pubg-uc-ycom_GM1330123889.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/get-more-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/offers-for-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-free-robux-by-playing-a-game_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/spin-coin_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-free-online-game_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
font_00_sfnt_off00003051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3051 23076 bytes
SHA-256: a9736367788aa8e6b3beb405d4e2fed96375cf76a3dedb0978c55a8517f0d877
font_01_sfnt_off00006499.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6499 19068 bytes
SHA-256: 0e57bf5fc7e38bc1577e47206eac6c5e2c06c9f0806f5508323794a4d77c6b57

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