Malicious PDF — malware analysis report

Static analysis result for SHA-256 58aa51ca467a76ed…

MALICIOUS

PDF

41.0 KB Created: 2021-05-11 03:34:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3d3138d152f53aff05e956cb8f7a49d6 SHA-1: 16aa499d314e5eafe212a91772b28bc2967efb11 SHA-256: 58aa51ca467a76edac6505b26a8c0224a5f2dfb7f6519270dafb5bff5b4ab9a6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links and a link farm heuristic indicates a large number of external PDF links, all pointing to websites offering game hacks and generators. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the structure and embedded links suggest a phishing or scam attempt designed to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/coin-master-free-generator-game-hack PDF link annotation
    • https://malungtreks.com/userfiles/files/how-to-hack-coin-master-game-2021_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-2021_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-pc-hack-tool_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/hacks-to-get-free-robux_GM431946152.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_003_off00004718.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4718 25028 bytes
SHA-256: b361aa7d293db2800c36aa2cde9e1a8a025a2b5050a629b6003856424e93f2ca
font_01_sfnt_off00007f8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F8B 17712 bytes
SHA-256: f6b7bbb27796bfdd91832c5c9631b2ef3c604ec4967bc220e21b541acce31e79

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