Malicious PDF — malware analysis report

Static analysis result for SHA-256 c76775503506d0ee…

MALICIOUS

PDF

36.1 KB Created: 2021-06-25 14:08:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 11296fdab43d5b5047999b21bf4eed8c SHA-1: 0a417eba2855e027cf220cc1cfb3cc3429830541 SHA-256: c76775503506d0eec869b67e852e87a9ea475be9a84be8a65e5eb61d2ef62818
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document acts as a lure, presenting itself as a generator for free Robux or Coin Master spins. It contains a large number of external links, forming a link farm, that likely lead to further malicious content or scams. The ML classifier strongly indicated maliciousness, and the presence of numerous SEO-optimized PDF links suggests an attempt to attract users through search engines.

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-robux-generator-no-survey-no-download-2021-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-in-roblox-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-anyone-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-cheat-for-two-player-millitary-tycoon_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/fb-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-items-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-in-arsenal_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-roblox-accounts-with-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-long-is-the-minecraft-free-trial_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_off00003287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3287 22480 bytes
SHA-256: b94811c51e84b1a13ab26ab2790b7ac862538f1371bba1ec885321e2a7e4eb63
font_01_sfnt_off000064d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D6 20096 bytes
SHA-256: aa531874f4a108c4bba14201f99cdc3c7b31404153f34dab68dfc1ff2242898c

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