Malicious PDF — malware analysis report

Static analysis result for SHA-256 711bb6772e930349…

MALICIOUS

PDF

50.3 KB Created: 2020-10-09 20:41:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 771db79a586d21dd8ce53d81a0abe512 SHA-1: 99433d06e75e1d89c84f3491c3ee52ab0da3a345 SHA-256: 711bb6772e9303495c646c0f7109805784fca67e6fe8480ce8c8199a9cb1546a
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://cctraff.ru/strik?keyword=pgem+t+easy+vector+wikipedia In PDF document text
    • http://files.lawofficesofmarkjcarrollpllc.com/uploads/1/3/1/0/131070151/ed40d5.pdfIn PDF document text
    • http://files.alqudspub.net/uploads/1/3/1/4/131438860/kejavejoruxo-musagepaw.pdfIn PDF document text
    • http://files.road-iq.com/uploads/1/3/1/3/131380901/5180303.pdfIn PDF document text
    • https://site-1038684.mozfiles.com/files/1038684/13767353233.pdfIn PDF document text
    • https://site-1037142.mozfiles.com/files/1037142/wonowozugirep.pdfIn PDF document text
    • https://site-1040037.mozfiles.com/files/1040037/83680737665.pdfIn PDF document text
    • https://site-1036731.mozfiles.com/files/1036731/677349086.pdfIn PDF document text
    • https://site-1037111.mozfiles.com/files/1037111/36432263734.pdfIn PDF document text
    • https://site-1041068.mozfiles.com/files/1041068/turufelipogelefiro.pdfIn PDF document text
    • https://site-1043365.mozfiles.com/files/1043365/zifejonatogomoru.pdfIn PDF document text
    • https://site-1037894.mozfiles.com/files/1037894/fopekula.pdfIn PDF document text
    • http://files.floridacoalitionalliance.org/uploads/1/3/1/6/131607310/sujinedokibakejexava.pdfIn PDF document text
    • http://rinugim.sarasotavirtual.com/uploads/1/3/1/4/131453850/7793447.pdfIn PDF document text
    • http://files.summerjhb.com/uploads/1/3/2/7/132740900/ff4b3c477.pdfIn PDF document text
    • http://jikemetu.bbqheaven.ca/uploads/1/3/2/6/132681670/kebapelofemetuxen.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000779d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x779D 5360 bytes
SHA-256: c87505183e9ee69c0f4fad67d9b9d7767ae844a23b8e8682ec945f1786c66fc8
font_01_sfnt_off000089f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F6 10556 bytes
SHA-256: 506444be8c11ab0311bfbde283938206a169142ace4e462c0f564e8a99a3f5af
font_02_sfnt_off0000ae08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE08 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e