Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ae73adfaeb116cc…

MALICIOUS

PDF

40.4 KB Created: 2020-10-05 05:17:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 734d463ab8861f060e1cef1024de884a SHA-1: 36e788187d249a7fce9d9bc14566be2f389cc8cf SHA-256: 8ae73adfaeb116ccf19b11681aea3ceb68a8fa19d248838cf158314bb63e018e
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, identified as a link farm, directing users to potentially malicious sites. One prominent URL, https://cctraff.ru/strik?keyword=bubble+diagram+architecture+pdf, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains similar URLs, reinforcing the attack pattern of luring users to external resources. No scripts were extracted, limiting the analysis of direct payload execution.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://cctraff.ru/strik?keyword=bubble+diagram+architecture+pdf
    • http://files.afd22.com/uploads/1/3/1/3/131378837/poviwimeb.pdf
    • http://xokupuza.villagespin.com/uploads/1/3/1/3/131384605/4783211.pdf
    • http://files.cclorder.com/uploads/1/3/1/4/131437158/a2de1048c903e1.pdf
    • https://site-1041206.mozfiles.com/files/1041206/22734777320.pdf
    • https://site-1038360.mozfiles.com/files/1038360/wikig.pdf
    • https://site-1039877.mozfiles.com/files/1039877/tunazumutuwujigo.pdf
    • https://site-1037267.mozfiles.com/files/1037267/64006541838.pdf
    • https://uploads.strikinglycdn.com/files/70605f0b-1f2e-4a64-9514-5a0d90487007/nixuleketuduwapazu.pdf
    • https://uploads.strikinglycdn.com/files/31ce0e44-8d23-4c00-9569-0691e64428bb/68929303382.pdf
    • https://uploads.strikinglycdn.com/files/4b80b57d-1f69-4c1e-bec9-0f335a9fb199/zibetukuwubudelu.pdf
    • https://uploads.strikinglycdn.com/files/444013b2-766b-43b4-bace-b990c4976189/89292243521.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060b3.bin
834f83ac8a064563f8816916334b989b59a49216f94a7298adbf4830725ee0ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B3 5580 bytes
font_01_sfnt_off00007383.bin
15e243ce2c95e30d568e10304f30eb1c82c1ba4a4b31bddfd6a99bb980ba0e2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7383 9660 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.