Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8cd4712de58b5b6…

MALICIOUS

PDF

27.6 KB Created: 2020-04-11 21:30:45 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 877daf9f37236670b605cac93bc952ad SHA-1: 0d2fe3bb2d791719361f8ca0aed6c72f580e0a35 SHA-256: b8cd4712de58b5b63c8ab485ea0ae28c1a051718cb701fde7a2ed3cae2e016ff
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body text, though partially garbled, includes the phrase 'Certificación reciente negativa propiedad inmueble del crim', suggesting a lure related to property certification. The embedded URLs are likely used to redirect users to malicious content or phishing pages. No scripts were extracted from this sample.

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://hokaimingkalvin.com/uploads/1/3/1/4/131406582/131406582.html#certificaci%C3%B3n+reciente+negativa+propiedad+inmueble+del+crim
    • http://madeinmanette.com/uploads/1/3/0/7/130739500/3647810.pdf
    • http://perfectlyimperfectbeautifullybroken.com/uploads/1/3/0/4/130488294/5338469.pdf
    • http://pcflooringremodelingllc.com/uploads/1/3/1/4/131453943/193501.pdf
    • http://classybycasss.com/uploads/1/3/0/2/130289353/b6aea.pdf
    • http://dsrsmashrepairs.com/uploads/1/3/0/9/130969291/4033474.pdf
    • http://rollenundskaten.de/uploads/1/3/1/4/131452934/854a4b53.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_off0000440f.bin
54a0cdf880e977e8a9b6b2d742acf2b1b37856544c870fceef2c4b7b7d413be0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x440F 7376 bytes

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