Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cf2f321430a7bb6…

MALICIOUS

PDF

43.0 KB Created: 2020-04-16 17:18:01 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 585305eb5f15a8003ce8eeec9331f21a SHA-1: da0afde9247830989744fa5c53c5e4bb9ebc6eec SHA-256: 8cf2f321430a7bb6e5be36cb64d861fdff27ccb3f82ee854df010e7beadcbe70
62 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body, though heavily obfuscated, contains a URL that appears to be a lure for 'animated pictures for powerpoint'. The presence of a PDF link farm heuristic further supports the malicious intent of distributing links to potentially harmful content.

Heuristics 3

  • 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.
  • 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://thesingbabysingshow.com/uploads/1/3/1/0/131071057/131071057.html#animated+pictures+for+powerpoint
    • http://karlrostron.com/uploads/1/3/0/4/130483373/kodukuwelolasonubega.pdf
    • http://thekinseylife.com/uploads/1/3/0/4/130490643/vanuwujexawew.pdf
    • http://vickyonthego.com/uploads/1/3/1/4/131453176/naloborigomevu.pdf
    • http://cleverette1414.com/uploads/1/3/0/8/130874264/jonizalipulobatuvov.pdf
    • http://myecns.com/uploads/1/3/0/4/130435813/f772a.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008182.bin
bb23de93de36a2cd36fdead3faf4937aa5ec59e1659f61c85584c33be305cde8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8182 8056 bytes

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