Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7716207ae07fdd6…

MALICIOUS

PDF

45.3 KB Created: 2020-06-03 02:45:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1a826d317f5d2f23514b2ecac020405b SHA-1: eadc8df4af54640ad973ba422fb6a6afad47766f SHA-256: f7716207ae07fdd61fa87b4cb79a66f381d5e43d0b88ba416698fd095b520ef8
94 Risk Score

Malware Insights

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

The PDF document contains a significant number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a method to distribute malicious content under the guise of legitimate-looking documents. The ML classifier strongly supports the malicious verdict. No scripts were extracted, but the sheer volume of outbound links suggests a coordinated effort to direct users to potentially harmful resources.

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://qll2ux.bdgct.com/uploads/1/3/0/7/130775049/130775049.html#oraciones+subordinadas+adverbiales+p
    • http://burlapdiamonds.com/uploads/1/3/1/3/131398576/7824865.pdf
    • http://sanantonioedge.com/uploads/1/3/1/4/131407867/fokutotupur.pdf
    • http://mail.macroswithmegs.com/uploads/1/3/0/2/130288818/6444914.pdf
    • http://acairlife.com/uploads/1/3/1/4/131452771/7edbffe659ba0d.pdf
    • http://ourrealpurpose.com/uploads/1/3/0/5/130540026/7366625.pdf
    • http://trescoolblog.com/uploads/1/3/1/3/131380440/nalogolixobifuk.pdf
    • http://rvanderheiden.com/uploads/1/3/1/4/131483234/7604564.pdf
    • http://saluslaboratorio.com/uploads/1/3/1/4/131409236/372466.pdf
    • http://qll2ux.bdgct.com/uploads/1/3/0/7/130775049/terms.html
    • http://qll2ux.bdgct.com/uploads/1/3/0/7/130775049/dmca.html
    • http://qll2ux.bdgct.com/uploads/1/3/0/7/130775049/policy.html
    • https://gefanopo.files.wordpress.com/2020/06/sumedifopupekuzeduviti.pdf
    • https://pasuvawax.files.wordpress.com/2020/05/23962509449.pdf
    • https://gosivev.files.wordpress.com/2020/05/xudivuxoril.pdf
    • https://xivuwor.files.wordpress.com/2020/05/pesirumaxevaparu.pdf
    • https://tujirejon.files.wordpress.com/2020/06/33485056019.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_off000083c2.bin
a3139ab43675a40246c9ae2e46403e595404f9c8036d4ad0115971ba36a5c52a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83C2 11660 bytes

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