Malicious PDF — malware analysis report

Static analysis result for SHA-256 5860927319411c89…

MALICIOUS

PDF

34.0 KB Created: 2021-06-18 11:02:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c55e847dc49f092bae766594a09da6c3 SHA-1: 095bf0b27eef79d33664e93db3689052e806b070 SHA-256: 5860927319411c89c9e1d55d7b98f64edf1ba5e329f6ee940364b3dee4312d99
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs and a specific external URI, all pointing towards gaming-related cheats and free items, suggesting a lure for users seeking such content. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, likely part of a content farm or phishing operation designed to drive traffic or downloads. The ML classifier also strongly flagged this PDF as malicious.

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/free-roblox-banner-maker-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/hack-para-roblox-de-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/tiktok-free-views_GM835599320.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/play-roblox-for-free-online-without-downloading_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-dungeons-free_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
font_00_sfnt_off00002f09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F09 22144 bytes
SHA-256: 0d7de1dddf9a6e9b0df4eb25b0880ac8513bd8a961528a93981094fba575bbe8
font_01_sfnt_off00006011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6011 19016 bytes
SHA-256: 85f384e95abc0310c1e40f11fed17dafc5094d45d90c06bc5c1654fa4f9d3c6d

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