Malicious PDF — malware analysis report

Static analysis result for SHA-256 d76d83dd16fded2d…

MALICIOUS

PDF

36.2 KB Created: 2021-06-22 09:44:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 197e6b23039c461d7f06ba9f939e80fc SHA-1: 3f18d0cf11d551957982baebb559d6ee983b93d2 SHA-256: d76d83dd16fded2d189a132aaa8f8432fcdeecde73cf89611befd655c424a73d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document exhibits characteristics of a link farm designed to lure users into downloading potentially malicious content, as indicated by the numerous external links and the ML classifier's high confidence score. The document body and extracted URLs suggest a focus on game-related hacks and free items, a common social engineering tactic. The presence of multiple PDF links, including one pointing to 'netcdn.co', strongly suggests an attempt to redirect users to malicious sites or downloaders.

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/accounts-for-roblox-free-and-nothing-on-them-game-hack PDF link annotation
    • https://gastronomytours.gr/ckfinder/userfiles/files/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/va-a-ser-hackeado-roblox-en-2021-18-marzo_GM431946152.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/free-college-textbooks-tiktok_GM835599320.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/como-hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/coin-master-fb-free-spins-link_GM406889139.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://gastronomytours.gr/ckfinder/userfiles/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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
stream_002_off000033bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33BC 22940 bytes
SHA-256: f6493a5244e764f56a83a1294fa0b14a3d633bde5c12859edb4067c81b51d058
font_01_sfnt_off00006745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6745 19616 bytes
SHA-256: 04c087685ac121d27822c35c919c3b3a5829155f5acadd0b221bd9d3dbc7c475

Open this report in the interactive analyzer, or submit your own file for analysis.