Malicious PDF — malware analysis report

Static analysis result for SHA-256 203844458a84c5bb…

MALICIOUS

PDF

39.8 KB Created: 2020-04-05 15:29:10 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4261a25a052e13383bb4253aa42ed5e4 SHA-1: dee7af843726a928d2e530a6713afa522bc7ac2a SHA-256: 203844458a84c5bb5c23beee03f66c3024f7eebe730c3197cc88edc24d794ac6
62 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

The PDF contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or redirection strategy. The embedded document body text, while partially corrupted, contains references to the URLs, indicating they are intentionally placed. The primary goal appears to be directing users to these external resources, potentially for SEO manipulation or to serve malicious 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://4angelstshirts.com/uploads/1/3/1/0/131070938/131070938.html#reactivo+de+fehling+y+almidon
    • http://jbwauthored.com/uploads/1/3/0/6/130639643/a073bda38.pdf
    • http://lashes2000.com/uploads/1/3/0/4/130476012/7895156.pdf
    • http://selfiesquadlasvegas.com/uploads/1/3/0/3/130323929/c15901f12b8cc1.pdf
    • http://romes.org/uploads/1/3/1/3/131398542/4166254.pdf
    • http://carolshungrymindcafe.com/uploads/1/3/1/4/131455734/gikejabubanidifamixi.pdf
    • http://thefarmerschoicellc.com/uploads/1/3/0/3/130323979/pepuvefu.pdf
    • http://montessoriinternationalchildrenshouse.org/uploads/1/3/1/4/131453045/vorilimodexubax.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_off00006dfc.bin
713f8a241584a72ef72a69f7c9b3dba4d97e86c43a8a5bfd3717c732a899a6ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFC 10080 bytes

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