Malicious PDF — malware analysis report

Static analysis result for SHA-256 003644bc2b84095f…

MALICIOUS

PDF

31.8 KB Created: 2020-04-15 10:38:36 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d0ee2947e4a9fc74aacdb3a2492ebb7c SHA-1: 0f76dfbd72682ce6b0373732b9ac98f97e301959 SHA-256: 003644bc2b84095fb34388bd75eed20e3d59558bd7da1b68ea23ef6c4449d820
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, many of which point to PDF files hosted on various domains, suggesting a link farm or redirection mechanism. The document body, though heavily obfuscated, contains a URL that appears to be a lure for downloading a wallpaper. This indicates a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://youtopay.com/uploads/1/3/0/7/130776509/130776509.html#4d+wallpaper+krishna
    • http://bungiewhy.com/uploads/1/3/1/4/131408369/tovusav.pdf
    • http://elliealice.com/uploads/1/3/0/5/130551882/b93e53de.pdf
    • http://kleanification.com/uploads/1/3/0/5/130551927/70d4c0ec4b1e.pdf
    • http://culturacirca.com/uploads/1/3/0/7/130775567/73656cb9d6.pdf
    • http://memehawk.com/uploads/1/3/0/3/130379474/tikodovefufetu.pdf
    • http://mylibertycondos.com/uploads/1/3/0/5/130543212/zisaxitugezovatuzaju.pdf
    • http://tinshedmodular.com/uploads/1/3/0/2/130289479/ruzedikiralebedi.pdf
    • http://braidedtherapies.com/uploads/1/3/0/2/130288320/40df90b3d4.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_off000056c8.bin
105c65bafa1e31ae1160135fc32debca7c3b14845edaadabf53ef91cc0dc63a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56C8 7440 bytes

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