Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3fb184871f496a3…

MALICIOUS

PDF

37.7 KB Created: 2020-04-29 01:20:24 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3e5c7bd5ec9e8607f60be80403189f8f SHA-1: acd9e26fbad7acc0571283dd6d95dc352c13e8be SHA-256: a3fb184871f496a3b58df3aba73aae8dca7da1211ec49932d93a48527f662fcb
62 Risk Score

Malware Insights

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

The PDF document presents itself as a Canadian student visa application form, but analysis reveals it functions as a link farm. It contains numerous external links pointing to other PDF files hosted on various domains, indicating a redirection scheme. The primary intent appears to be to lure users into clicking these links, leading them to potentially 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://jenntreado.com/uploads/1/3/0/2/130291499/130291499.html#canadian+student+visa+application+form+online
    • http://antvalseminars.com/uploads/1/3/0/6/130604433/2172498.pdf
    • http://metzrwesleyan.com/uploads/1/3/0/8/130874482/4155714.pdf
    • http://saludigestiva.net/uploads/1/3/0/5/130588596/110167.pdf
    • http://masteringlife.info/uploads/1/3/0/2/130271234/gosujagibe.pdf
    • http://higherrealmhealing.com/uploads/1/3/0/8/130814601/3a806.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_off00006e0a.bin
232c07a3c9b8dd51a0639d2c554d868a2e1011dd99bc637a9970a428f636a723		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E0A 7500 bytes

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