Malicious PDF — malware analysis report

Static analysis result for SHA-256 362705a48575096f…

MALICIOUS

PDF

30.4 KB Created: 2020-05-30 12:10:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13d3c24c801139bdb471e454050d6370 SHA-1: 9f18da9108ccc803f3eb0b6e73396f6f7395486e SHA-256: 362705a48575096f1d815d19f99033ec41e37c712ae1bcf523487aafadaa259a
94 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML classifier also strongly indicated maliciousness. The document body contains some obfuscated text and the primary URLs, suggesting a coordinated effort to host and link to potentially malicious content across multiple domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://northportleadership.com/uploads/1/3/1/4/131438244/131438244.html#snoo+smart+sleeper
    • http://smilyface.org/uploads/1/3/0/6/130639140/xujuwidofuviz_papim.pdf
    • http://mymedicaresolutions.com/uploads/1/3/0/7/130776130/dedovifoduri.pdf
    • http://hostmaster.oxfordbaptistchapel.org.uk/uploads/1/3/0/7/130739793/fizugoxuku-bafinafibo-binosifewufi-mewaluje.pdf
    • http://dashwings.com/uploads/1/3/0/6/130639071/jelodovuvarejemivev.pdf
    • http://vwattsart.com/uploads/1/3/0/5/130590030/f840440.pdf
    • http://swimmingwithoutborders.org/uploads/1/3/0/7/130740259/doxobufapurotoze.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_off00004c98.bin
a18f64a0a2f07db8eee29d2dc41f305c9f1595b3b682cd8a08d6799ec440ec1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C98 10096 bytes

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