Malicious PDF — malware analysis report

Static analysis result for SHA-256 1945919a1c401c76…

MALICIOUS

PDF

36.2 KB Created: 2020-06-12 21:57:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4faa8a5af5a93ae8cd9d1d71054d4f9 SHA-1: c9b9eddf1e9c5a78dc509b75ebd41b416be40d0f SHA-256: 1945919a1c401c7633613c43e480909668e7321703be2578dae252c8306e3a7f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, many of which appear to be part of a link farm or SEO poisoning scheme. The ML_NYX_PDF_MALICIOUS classifier also strongly indicated maliciousness. The document body is heavily obfuscated and contains embedded URLs, suggesting it is designed to redirect users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://ahabancommunications.com/uploads/1/3/0/7/130739816/130739816.html#id+y+ense%25C3%25B1ad+letra
    • http://webmail.robertlpalmer.com/uploads/1/3/0/3/130323355/8509397.pdf
    • http://ohtafilmfest.com/uploads/1/3/0/2/130270936/rutijojijak_lipixadulale_sifejigixemowa_xatatibagixup.pdf
    • http://dt-resume.com/uploads/1/3/0/5/130588650/4fd3e1d94.pdf
    • http://caredirectndissupportservice.com/uploads/1/3/0/6/130640084/e6856b2f92983.pdf
    • http://valentinaelenadesign.com/uploads/1/3/0/4/130436402/samupupafemajubes.pdf
    • http://theblendedbrunette.com/uploads/1/3/0/5/130589099/acf487ae3.pdf
    • http://martechmarineconsultingllc.com/uploads/1/3/0/4/130476060/095468690f.pdf
    • http://sarahpyewrites.com.au/uploads/1/3/0/4/130436525/85d18e0a2ae175.pdf
    • http://thedetermineddoula.com/uploads/1/3/0/3/130313809/zuziboti-xovewe-xiwutip-gejobu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://patepekugi.files.wordpress.com/2020/06/sarot.pdf
    • https://wutatume.files.wordpress.com/2020/06/tekilegubowi.pdf
    • https://fekikawomupu.files.wordpress.com/2020/06/gokeboketakux.pdf
    • https://bidaleb.files.wordpress.com/2020/06/74686837995.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d69.bin
4ff63f646d3d8c08ce01e564a6ef9d62f07cf5db0db283fd40a997f2bf676799		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D69 12096 bytes

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