Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee0239295a9531d5…

MALICIOUS

PDF

42.4 KB Created: 2020-10-04 09:59:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 2d3169de4f87323edbc6ae3a90f8e04e SHA-1: e9d7e9037e593d0844a8f525251017459709ddd9 SHA-256: ee0239295a9531d58b1311b71e84623b96ccbfd028cb162b1b3437249ed783d6
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://gettraff.ru/strik?keyword=icarus+at+the+edge+of+time In PDF document text
    • https://site-1037071.mozfiles.com/files/1037071/92478523067.pdfIn PDF document text
    • https://site-1037141.mozfiles.com/files/1037141/94267044162.pdfIn PDF document text
    • https://site-1038475.mozfiles.com/files/1038475/dezenasomupadulunupiku.pdfIn PDF document text
    • https://site-1036725.mozfiles.com/files/1036725/jomarapejuwanesaxum.pdfIn PDF document text
    • https://site-1037884.mozfiles.com/files/1037884/kobafozosep.pdfIn PDF document text
    • https://site-1038915.mozfiles.com/files/1038915/zufuvupuzadajoke.pdfIn PDF document text
    • https://site-1036938.mozfiles.com/files/1036938/31831035935.pdfIn PDF document text
    • http://files.unisonnorpol.org.uk/uploads/1/3/1/3/131380555/10e81aec1b217e5.pdfIn PDF document text
    • http://lobat.mtmetfab.com/uploads/1/3/0/7/130739289/jizeros_mejinawofut_tusezeseno.pdfIn PDF document text
    • http://files.robertacarr.com/uploads/1/3/1/4/131452959/midomemamokovu.pdfIn PDF document text
    • http://budinuri.grandhavenlegion.org/uploads/1/3/1/4/131407493/7891509.pdfIn PDF document text
    • http://files.emilyinaction.com/uploads/1/3/1/6/131607053/daxujizi_sapulatuleli_gujobelij.pdfIn PDF document text
    • https://site-1038880.mozfiles.com/files/1038880/bekubomifa.pdfIn PDF document text
    • https://site-1044105.mozfiles.com/files/1044105/rikemulijebafabuvu.pdfIn PDF document text
    • https://site-1040347.mozfiles.com/files/1040347/jukemuwix.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/32799524930.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000675c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x675C 5340 bytes
SHA-256: 79ec27fca9ec82dceffc1c4f38086b65f3be8ce6cd432f57db88852b2b404e6f
font_01_sfnt_off0000795c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x795C 10484 bytes
SHA-256: 3d8d71e9604dc70157f03f2a9cf53bf2679a168b8b7755fefaa606780c5c730d