Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c2c5875122abddf…

MALICIOUS

PDF

37.6 KB Created: 2020-10-09 18:13:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: fe3b4553f3097144224c0094b3382d99 SHA-1: b824bbce19d72d56bb5aea835c482621723b60b1 SHA-256: 1c2c5875122abddfe0681b6ef5280d14fd22e5032fb983ca9c60573dc79996f9
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=magruder%2527s+american+government+2016+pdf In PDF document text
    • https://site-1037035.mozfiles.com/files/1037035/76650233501.pdfIn PDF document text
    • https://site-1038796.mozfiles.com/files/1038796/54907334526.pdfIn PDF document text
    • http://files.thelittlethingsilove.com/uploads/1/3/1/4/131410747/8549308.pdfIn PDF document text
    • http://files.alvilam.it/uploads/1/3/1/4/131483143/rosubumerewuv-kibutosuvip-zeriz.pdfIn PDF document text
    • http://lebivazi.wilkinsonmarine.com/uploads/1/3/2/6/132681670/mezale.pdfIn PDF document text
    • http://files.debbieswhitebutterflysoaps.com/uploads/1/3/2/7/132740724/gepijizeturaxu.pdfIn PDF document text
    • https://site-1036637.mozfiles.com/files/1036637/35644608999.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/25527930107.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
    • https://uploads.strikinglycdn.com/files/7618d289-6c80-4669-972f-8ba8e04c7cc7/71568347413.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c719ea2-8d1e-4dfc-97a7-0208bddec6ab/65343056106.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50e59213-8c50-464b-902d-a7c78e658a97/70296938368.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4783 5904 bytes
SHA-256: 309dfd102cc77c6a150ffadf44c483eea98f56583cac088ac65f99cee66841fc
font_01_sfnt_off00005b9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B9A 9436 bytes
SHA-256: 462aa02c4889fc5ea3f5f899df835a740d27d8bdd4499136370d9391e97f0a79
font_02_sfnt_off00007bd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD1 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2