Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f16169b3664f642…

MALICIOUS

PDF

33.4 KB Created: 2020-04-23 16:26:39 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8a67d05d818415fe31363b849c9eb442 SHA-1: 55343625a4c468200d1984f142e6040601f89023 SHA-256: 9f16169b3664f642c86d5dc88515feb0df696fbeb7804a17cfe0d78007ba6da6
62 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, many of which point to uniquely named PDF files on various domains. This pattern is indicative of a link farm or SEO poisoning technique, likely intended to redirect users to malicious content or phishing pages. The presence of multiple 'unknown' reputation URLs strongly supports this assessment.

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://calsap.org/uploads/1/3/0/8/130813528/130813528.html#acura+nsx+2018+performance
    • http://priorlakemarinestorage.com/uploads/1/3/0/6/130603941/kaxodux.pdf
    • http://dolcevitamodas.es/uploads/1/3/0/2/130272275/molosenemi.pdf
    • http://joinangelbrokers.com/uploads/1/3/0/2/130287419/8f7b8e09c99019.pdf
    • http://soloncentergallery.org/uploads/1/3/0/3/130379397/8584149596948.pdf
    • http://daisydesignandgifts.us/uploads/1/3/0/7/130739286/lamaf_nevodi.pdf
    • http://fearfrontier.com/uploads/1/3/0/9/130969764/depepaf_juforafafutito_zaravorukaku_fojiru.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_off00005c98.bin
c227931669d5662de9541414f6c4d21bf104906eff03166d3d1d8185a9485065		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C98 7568 bytes

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