Malicious PDF — malware analysis report

Static analysis result for SHA-256 0878cb74d4d33c86…

MALICIOUS

PDF

35.7 KB Created: 2020-06-02 20:00:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 404ff09ac12a62bad30d88b5f61e6625 SHA-1: e9c0a8b3b32bba617fd6642771dc576f814e9c54 SHA-256: 0878cb74d4d33c86bf0b184ce08aef2936212ca51b75473aa04108ca00dad094
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The embedded URLs point to various PDF files hosted on different domains, suggesting a coordinated effort to manipulate search engine results or distribute content. The ML classifier also strongly indicated maliciousness.

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://fit4akingcleaning.co.uk/uploads/1/3/0/6/130620544/130620544.html#battlefront+2+max+rank
    • http://niqsstudioofluxury.com/uploads/1/3/1/6/131606540/2154773.pdf
    • http://storybookgoat.com/uploads/1/3/0/5/130551661/tagewazor-paxul.pdf
    • http://grxotics.com/uploads/1/3/0/8/130814078/merinaguxiba.pdf
    • http://universitysuccessformula.com/uploads/1/3/1/8/131857252/3d638fca.pdf
    • http://indyhometeamrealty.com/uploads/1/3/1/3/131380767/lozusajek.pdf
    • http://brightfloatpods.com/uploads/1/3/2/3/132303371/1181529.pdf
    • http://yogipandap.com/uploads/1/3/0/2/130289676/52d3f6.pdf
    • http://nadavscbd.net/uploads/1/3/1/4/131482996/zonabu-geboreditabu.pdf
    • http://chaletdamo.com/uploads/1/3/0/8/130813696/701ac8eddc.pdf
    • http://fit4akingcleaning.co.uk/uploads/1/3/0/6/130620544/terms.html
    • http://fit4akingcleaning.co.uk/uploads/1/3/0/6/130620544/dmca.html
    • http://fit4akingcleaning.co.uk/uploads/1/3/0/6/130620544/policy.html
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://gizoviwiwez.files.wordpress.com/2020/05/20282978315.pdf
    • https://dixurozazix.files.wordpress.com/2020/05/53049564055.pdf
    • https://wemilirijet801766978.files.wordpress.com/2020/06/56014310498.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_off00005efe.bin
9c718b2353799934fd98e87d576b02a7bcbcfd26a382b2ac5f5219f53191d94e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFE 10620 bytes

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