Malicious PDF — malware analysis report

Static analysis result for SHA-256 14e751e69be2d95e…

MALICIOUS

PDF

50.2 KB Created: 2020-06-17 01:26:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5740510bee38c7eeac8faa604221652 SHA-1: 577a81e0e6e21cfd8618a5ba2c012c0c9eb03cfd SHA-256: 14e751e69be2d95e9a293baeeff1f97d87c7589b183b20818fdb4fdd204bdc9e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The document body is heavily obfuscated but contains references to URLs that are likely used to redirect users to malicious content or for SEO manipulation. No scripts were extracted, but the sheer volume of external links suggests a malicious intent to drive traffic or host further malicious content.

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://georgemalerbophotography.com/uploads/1/3/0/7/130775242/130775242.html#soil+lab+manual
    • http://ns2.nyc.leafmarks.com/uploads/1/3/0/5/130544352/d57b5.pdf
    • http://cosmicbutter.com/uploads/1/3/1/1/131163853/351aa553e.pdf
    • http://bceastrong.org/uploads/1/3/1/3/131398334/a6b098.pdf
    • http://underthegloves.com/uploads/1/3/0/6/130639947/1230620.pdf
    • http://75-22-178-129.ankabhi.org/uploads/1/3/0/6/130639508/b6f307165.pdf
    • http://74-123-79-170.mgwnet.com/uploads/1/3/1/6/131606065/kunibakogefasizori.pdf
    • http://thebellsplustwo.com/uploads/1/3/0/6/130604013/ridavu.pdf
    • http://traditionaltaekwon-dallaince.com/uploads/1/3/1/3/131379444/79e8e10.pdf
    • http://asesoresdesegurosmanejar.com/uploads/1/3/1/4/131412858/tosowese-kuwisodejus-salamuvupem.pdf
    • http://sabinescottage.com/uploads/1/3/0/5/130539205/8dd1a256db5d.pdf
    • http://thisistodayjunior.com/uploads/1/3/0/5/130588239/67a60b7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000088a7.bin
6b2be51020e6f8addc7a2065022033323ddb3e54bb86a68d4d0ea756c76de644		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88A7 4484 bytes
font_01_sfnt_off000097af.bin
98c5cfb1f184dca1cc7adf9253cb8d73f42b39b8ca04fb0e2a656e8577c910de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97AF 10916 bytes

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