Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9591e2b3b9d1880…

MALICIOUS

PDF

37.0 KB Created: 2020-04-05 06:13:08 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5dbf67d0e4e9ae6048dd3dbe5ef80f26 SHA-1: b60acee86d4fc548acada4a7aa7f9246416238a7 SHA-256: e9591e2b3b9d18806ac730db91e69bd52e607c697ac0b5337b80f59c30734303
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a common technique for SEO poisoning or directing users to malicious content. The document body contains a message that appears to be a lure, referencing a connection issue with Samsung, and embedding a URL that leads to a potentially malicious HTML file. The heuristic firings confirm the presence of a link farm and external URIs, indicating a likely attempt to redirect the user to a compromised or malicious site.

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://teddy71.org/uploads/1/3/0/5/130550774/130550774.html#reg90+unable+to+connect+samsung
    • http://lakeharborfinancial.com/uploads/1/3/0/9/130968917/34735.pdf
    • http://gomii.xyz/uploads/1/3/0/7/130776850/sonuzasejuwodozed.pdf
    • http://koolcurvess.com/uploads/1/3/0/5/130544703/pegiwazituvan_sojuferedozit.pdf
    • http://independentcountrymusichalloffame.com/uploads/1/3/1/4/131454027/vapije-maxakubaz-sovabonodo.pdf
    • http://lionfoundation.net/uploads/1/3/0/7/130739131/tewerixake.pdf
    • http://unitedcore.org/uploads/1/3/0/5/130539599/54cbca4f1b.pdf
    • http://course-group.com/uploads/1/3/0/6/130640009/3461490.pdf
    • http://middlingsort.com/uploads/1/3/0/7/130775734/tivax_nunabaziwirim_paguvo.pdf
    • http://southshorenotary.com/uploads/1/3/1/3/131382395/6111562.pdf
    • http://www.katie-lindsey.com/uploads/1/3/0/6/130604630/xazib_kenol_zunagavogeba.pdf
    • http://lucasconstruction.business/uploads/1/3/0/2/130272804/1355764.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_off000067d0.bin
36bf627b300a712d02e313e12918f9d43a15640ecab0665cb89cd7c47da14975
pdf-font-stream PDF embedded font (sfnt) at offset 0x67D0 7576 bytes