Malicious PDF — malware analysis report

Static analysis result for SHA-256 a524d8bc9ce62b73…

MALICIOUS

PDF

37.9 KB Created: 2020-06-07 21:49:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 976ef67d085c1ca014ac22c902d1aab4 SHA-1: 235563aeee1670e22b8c7c6703bf533566663494 SHA-256: a524d8bc9ce62b73cc4cd383f3e7a939a8aab5a2cdb5ebf666c0e362c8cdc980
92 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs pointing to various domains, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains references to these URLs, suggesting a deliberate attempt to redirect users. The primary attack pattern appears to be a link farm designed to manipulate search engine results or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://gs0gp.bpmtc.com/uploads/1/3/1/3/131384663/131384663.html#discurso+de+quincea%25C3%25B1era
    • http://saralynnjournal.com/uploads/1/3/1/4/131438162/zanaxigusinakaz_pesegofebenu_lumurezudajojo.pdf
    • http://kcctds.com/uploads/1/3/0/6/130620882/dabifefuzex-zezejejebuwiz-jesomumokavose-manevazerotile.pdf
    • http://marinemedicinc.com/uploads/1/3/0/6/130639895/8715456.pdf
    • http://hopefindsus.com/uploads/1/3/0/6/130639896/fibomazolilawibono.pdf
    • https://xenavosodaza.files.wordpress.com/2020/06/84260495692.pdf
    • https://sowozegoji.files.wordpress.com/2020/06/nuvanijunazalabit.pdf
    • https://jatariwurev.files.wordpress.com/2020/06/74362017226.pdf
    • https://tonoxedaset.files.wordpress.com/2020/06/xumuredar.pdf
    • https://likabizev485265161.files.wordpress.com/2020/06/37535710460.pdf
    • https://mewurelaj.files.wordpress.com/2020/06/57583751599.pdf
    • https://sivavolujevu.files.wordpress.com/2020/06/8318467764.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_off00006762.bin
9cf29e5778017939f8146471997f95dc67a672263773fee9f6ef476a2582c6aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6762 11296 bytes

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