Malicious PDF — malware analysis report

Static analysis result for SHA-256 efafc04531a43cc5…

MALICIOUS

PDF

34.8 KB Created: 2020-06-05 15:12:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f61efdce43abef0f8155cb53b5d5b5ce SHA-1: 0999e1fa8a6baf66138264fdba8911dd735bf3f8 SHA-256: efafc04531a43cc5e133221e1e6cb817383ae88b0fffa166fc4faf8c00d8d5b0
94 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are hosted on domains related to link farming. The document body, though partially corrupted, contains text suggesting a lure for movie content, which aligns with the PDF_SEO_LINK_FARM heuristic. The primary intent appears to be directing users to potentially malicious or unwanted content through a deceptive link farm strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ded378.nathanb.com/uploads/1/3/0/7/130739275/130739275.html#minha+m%25C3%25A3e+%25C3%25A9+uma+pe%25C3%25A7a+2+filme+completo+netflix
    • http://theworkingbody.net/uploads/1/3/1/0/131070186/5a673472.pdf
    • http://eternaltimber.com/uploads/1/3/0/5/130540405/wisonuvakerose.pdf
    • http://preceptscience.com/uploads/1/3/1/4/131453535/zorenaxivezomam.pdf
    • http://rollputz.net/uploads/1/3/0/4/130490875/8186840.pdf
    • http://ded378.nathanb.com/uploads/1/3/0/7/130739275/terms.html
    • http://ded378.nathanb.com/uploads/1/3/0/7/130739275/dmca.html
    • http://ded378.nathanb.com/uploads/1/3/0/7/130739275/policy.html
    • https://kesodisak.files.wordpress.com/2020/06/bajowol.pdf
    • https://bujimuvexage.files.wordpress.com/2020/06/17420958512.pdf
    • https://wefemimopo.files.wordpress.com/2020/06/77237828522.pdf
    • https://zonutubuw.files.wordpress.com/2020/06/gumijugazaxiropiragu.pdf
    • https://xiduvavaj.files.wordpress.com/2020/06/tijojitage.pdf
    • https://biwejutidaxo.files.wordpress.com/2020/06/17813090380.pdf
    • https://jezodewetas.files.wordpress.com/2020/06/fobafom.pdf
    • https://karukutex.files.wordpress.com/2020/06/kowasuros.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_off00005820.bin
3a88493b7753bdc00d692f70ce0d07feb96a2313221b94f9d18ae3229cc63b46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5820 11548 bytes

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