Malicious PDF — malware analysis report

Static analysis result for SHA-256 96991ed35472ae8a…

MALICIOUS

PDF

42.5 KB Created: 2021-06-03 05:19:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9e8ae981b8b7828575c69027b3cfa89b SHA-1: ff1e3e13a87c05454a0721d6331136a06c2ac2ae SHA-256: 96991ed35472ae8a3ede9731c92c3a8c6f10e55e876825ddf96b99937e9da198
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which appear to be related to game hacks and free in-game currency. The primary URL, https://netcdn.online/app/406889139/coin-master-free-gold-cards-link-game-hack, suggests a lure for Coin Master game cheats. The presence of a "download button" heuristic and the ML classifier's high confidence score indicate malicious intent, likely to direct users to malicious sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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.online/app/406889139/coin-master-free-gold-cards-link-game-hack PDF link annotation
    • http://digilibfisip.unla.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-iphone_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
stream_004_off00004bce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BCE 24544 bytes
SHA-256: 8343dfefe8f59c9f7a1a5b0fb1569a95ad55df8154d2719359a746a3a6fa178d
font_01_sfnt_off00008413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8413 18128 bytes
SHA-256: 70aaa51de045f356af96609cbefa464fa4c02188ab9d169d531121296ec6db77

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