Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e927ce2e6dbb408…

MALICIOUS

PDF

39.7 KB Created: 2020-06-17 11:23:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b51391d08246b3c7ed1ddc8636f376c SHA-1: 9358767a0ee60d3acb27072537f7db42981879e5 SHA-256: 4e927ce2e6dbb408ff0edbeffc3b38e485306fcf000d8701ff137ee9baf6a314
70 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files hosted on various domains. This pattern is indicative of a link farm designed to obscure the true malicious destination or to distribute malware through multiple compromised sites. The presence of a 'download button' heuristic further supports the idea that the document is intended to trick users into clicking links and downloading files. No scripts were extracted, limiting the analysis of direct payload execution.

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://lists.accordionapocalypse.com/uploads/1/3/1/4/131437370/131437370.html#samsung+417+manual
    • http://unitychurchofgreenville.com/uploads/1/3/0/6/130604079/4786303.pdf
    • http://post2grow.com/uploads/1/3/1/4/131407592/bewomasixutisu.pdf
    • http://careyscoastalhandyman.com/uploads/1/3/0/4/130476429/1219115.pdf
    • http://chrisbordeleau.com/uploads/1/3/1/4/131407181/katefetomu.pdf
    • http://perfecttouchcarwashing.com/uploads/1/3/0/9/130969492/kaloxoj.pdf
    • http://cpanel.cabincreekfarmstudio.com/uploads/1/3/1/0/131070566/gadorusupomob_vebate_janejati.pdf
    • http://fortidee.com/uploads/1/3/0/8/130874240/e097d9.pdf
    • http://ravellence.com/uploads/1/3/1/4/131453182/jitulu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f7b.bin
e4dd0de593aac4afcfc615fb12c67ba2d555bddc07e629f7cfc12e5680857197		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7B 4756 bytes
font_01_sfnt_off00006f89.bin
b1cfdc074d5f83deb6943ee8425a6a0bb38966ab08407ba6d2c497cb29e0125a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F89 10484 bytes

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