Malicious PDF — malware analysis report

Static analysis result for SHA-256 925bf0d3e6ae9160…

MALICIOUS

PDF

30.9 KB Created: 2020-03-28 04:55:31 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 91a2234694736d549ab0e60ec5ab7a73 SHA-1: 4e5fd2a423a05bfede0306c67ece5566c62f4eb8 SHA-256: 925bf0d3e6ae9160a81738e0002a019cabd2d8b0441f872917c087877b896e15
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body mentions 'The godfather 2 gameplay free roam', suggesting a lure to attract users to click on these links. The primary purpose appears to be SEO spam or directing users to potentially malicious content hosted on these external sites.

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://gregjiel.com/uploads/1/3/1/3/131379371/131379371.html#the+godfather+2+gameplay+free+roam PDF link annotation
    • http://parmaohiomasonry.com/uploads/1/3/0/2/130270874/vovak.pdfIn PDF document text
    • http://www.perfectlycomplicated.com/uploads/1/3/0/3/130313403/sakadese-nomid.pdfIn PDF document text
    • http://multifaithstorytelling.org/uploads/1/3/0/7/130775002/petoxuziranuk_jodavoneve_dagamowi.pdfIn PDF document text
    • http://imaginebonbons.com/uploads/1/3/0/7/130738762/4551399.pdfIn PDF document text
    • http://minerup.com/uploads/1/3/0/5/130590613/pesif.pdfIn PDF document text
    • http://2blether.com/uploads/1/3/0/6/130639254/68ba1b4.pdfIn PDF document text
    • http://spencerkrum.org/uploads/1/3/0/6/130639021/dekanazojuvele.pdfIn PDF document text
    • http://rentaventura.com.es/uploads/1/3/0/6/130621707/9938956.pdfIn PDF document text
    • http://writingsi.com/uploads/1/3/0/5/130590664/forer.pdfIn PDF document text
    • http://scarylionmedia.com/uploads/1/3/0/5/130589345/suvosunapejuwopi.pdfIn PDF document text
    • http://drcarolineclarke.com/uploads/1/3/0/6/130604126/4835327.pdfIn PDF document text
    • http://nakedcoconut.com/uploads/1/3/0/4/130483074/nuzijuxu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
🗂 Part of campaign: daytonarescuemission.org 4 samples

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000510e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x510E 7116 bytes
SHA-256: e00b36515592853a2b76a422ddd1bc4b80a4c06b84bf5fbc6b149bbdef12570d