Malicious PDF — malware analysis report

Static analysis result for SHA-256 464c5fd49eb1a02b…

MALICIOUS

PDF

45.0 KB Created: 2021-05-13 03:02:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 98e48cde276e86fbfbb798f726bfee25 SHA-1: 567a088b839ba3d709c5c643c72d9209939fb0aa SHA-256: 464c5fd49eb1a02bc26099b53c75c6bf2e6b858e8390c1fa2989020b781077c1
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which appear to be SEO-optimized for game-related terms like 'robux' and 'coin master'. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of such links, and the 'ML_NYX_PDF_MALICIOUS' score is high. The document body, though partially corrupted, contains URLs that are likely part of a link farm designed to redirect users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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 https://netcdn.xyz/app/406889139/free-spin-link-coin-master-game-hack PDF link annotation
    • http://lib.fekon.untad.ac.id/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-apk-ios-download_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/wurst-115_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/robux-boost_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-games-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://coinmasterspinandcoin.comIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a29.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A29 25228 bytes
SHA-256: 040ed804197c254b6d3f8791a9fb3e831e8956774b1daf8cad144a691542d0b3
font_01_sfnt_off0000842d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x842D 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008ddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDF 18056 bytes
SHA-256: 5e0e5252c5991e876b89620e8fc451db275611f7bed2c8d0b16d9c89ed4fe559

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