Malicious PDF — malware analysis report

Static analysis result for SHA-256 934ded29e6f19a45…

MALICIOUS

PDF

35.5 KB Created: 2021-06-27 02:13:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c0537613862b53764c8b8dee595083b9 SHA-1: 737450c6091169aaca035c18316e029f8a4b5137 SHA-256: 934ded29e6f19a454f37d26ccf2d57e54a359151c2f4bc3ba653d3f0e4b96e14
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are SEO-optimized PDFs related to Roblox game hacks and free Robux. The presence of a PDF link farm and a high ML classifier score indicates malicious intent. The document likely serves as a lure to direct users to malicious sites that may host malware or phishing content.

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/critical-strike-hacks-roblox-game-hack
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/free-robux-codes-2021-november_GM431946152.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/free-spin-coin-master-link-2021_GM406889139.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-games-with-cheat-engine_GM431946152.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/free-gamepass-roblox-2021_GM431946152.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/hacks-to-fly-in-roblox_GM431946152.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/roblox-robux-generator-no-hack_GM431946152.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-retail-tycoon_GM431946152.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/how-to-hack-into-other-accounts-on-roblox_GM431946152.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/account-hacker-roblox-patebin_GM431946152.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/games-that-actually-give-you-free-robux-2021_GM431946152.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/roblox-rogue-lineage-hack_GM431946152.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/roblox-anti-speed-hack-fe_GM431946152.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/free-roblox-inspect_GM431946152.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/roblox-first-roblox-hacker_GM431946152.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/the-conquerors-roblox-pre-hacked_GM431946152.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/roblox-com-free4mobile24-com-free-robux_GM431946152.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/roblox-how-to-hack-kohls-admin-house_GM431946152.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/roblox-hack-com_GM431946152.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/free-roblox-welcome-to-farmvil-vip-links_GM431946152.pdf
    • http://sman1tembuku.sch.id/new/public/ckfinder/userfiles/files/a-code-for-free-robux-script_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000344b.bin
7f83a5ac7aafcb6b063a91e895fedc56d270c86e527fe194ae054111dc723e29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x344B 22620 bytes
font_01_sfnt_off0000660b.bin
994e9a9e46b1ef1350ba6048e37e3ab9c346b4ad82df8850033480e8d45b0f92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x660B 18880 bytes

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