Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cddbc188ad191a3…

MALICIOUS

PDF

32.5 KB Created: 2020-05-30 08:16:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75b9b44ff6ee4c80983515d93c9d1cae SHA-1: f585a80bab729073f03f0b624cb3d5d2bc7f9c9f SHA-256: 8cddbc188ad191a3477c93045ef76144c3d0cc34c36082b5c5c6565e6ec226c5
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 commonly used for SEO poisoning or to redirect users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a high likelihood of malicious intent. The document body, though partially corrupted, contains fragments of URLs and text that suggest a lure, such as 'xxl freshman 2016 cypher lyrics', which is likely a deceptive pretext to encourage clicks on the embedded malicious links.

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://fancifuldreams.net/uploads/1/3/0/7/130739333/130739333.html#xxl+freshman+2016+cypher+lyrics
    • http://host88.carmichaelnl.com/uploads/1/3/1/6/131637457/6285884.pdf
    • http://reports.appsvue.com/uploads/1/3/0/5/130540453/436eed74f.pdf
    • http://meadreviews.com/uploads/1/3/0/6/130639183/0afbf7accc6.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_off00005475.bin
f70ed03d0562b0eb278d318a4125d7235bdb3c56b141bfcb9a35faeaca8a3549		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5475 10296 bytes

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