Malicious PDF — malware analysis report

Static analysis result for SHA-256 da3600ec76c4ded1…

MALICIOUS

PDF

43.5 KB Created: 2020-04-04 14:56:17 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 58a73d39693f7ac334dc8c320a40e2e1 SHA-1: dc06cbe4b4d05e3172a8785db0f9073a0077c50f SHA-256: da3600ec76c4ded1ac9ee83bb0d9b3f9d472876d823c7eaa2bda9c5fdc50b1e6
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF document contains a large number of external links, many of which point to SEO-optimized PDF files hosted on various domains. The document body, though partially corrupted, suggests a lure related to educational materials. The primary attack pattern involves redirecting users through a link farm to potentially malicious content hosted on a network of domains.

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://wildchild.dance/uploads/1/3/1/3/131383934/131383934.html#material+didactico+para+primer+grado+de+primaria+para+imprimir
    • http://chinatuna.net/uploads/1/3/0/5/130541351/fezobolatutow_dosone_kujiwonopemukit.pdf
    • http://3crepairs.com/uploads/1/3/0/9/130969420/ropexabugadides_futuvi.pdf
    • http://rackasconsulting.com/uploads/1/3/0/5/130588244/lesazibumofed.pdf
    • http://shopity.space/uploads/1/3/0/7/130739258/ledikub.pdf
    • http://innovativegardensolutions.com/uploads/1/3/1/4/131438684/9826266.pdf
    • http://katlillies.com/uploads/1/3/0/7/130775518/1670253.pdf
    • http://postcardcritic.com/uploads/1/3/0/3/130323517/a05f193a8e.pdf
    • http://tjsfitness.org/uploads/1/3/0/2/130270836/cc3a2.pdf
    • http://issuesbasedmanagement.com/uploads/1/3/0/7/130776447/3553580.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_off00007de4.bin
517d8934d5acaaa4595a05d09360eaa24154c5912060f3e2ffd6e99a52b33434		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE4 9152 bytes

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