Malicious PDF — malware analysis report

Static analysis result for SHA-256 bebe3a94962d7f32…

MALICIOUS

PDF

77.8 KB Created: 2021-02-19 06:56:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 523a0999228f983f58a5a11bfa3953af SHA-1: c676373de37f161470dba60d640cc91d3bafa1e6 SHA-256: bebe3a94962d7f32c8235ebf075f779693cf5d84fa2b2fa162fd6aa4a960d83a
126 Risk Score

Malware Insights

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

The PDF contains multiple external URIs, with one prominent URL leading to a domain associated with phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a celebrity search query, designed to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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 https://jottigo.ru/strik?utm_term=who+played+daisy+in+girl+interrupted PDF link annotation
    • http://fullpisetc.ru/should_i_answer_unknown_numbersfqrsu.pdfIn PDF document text
    • http://beststudent.space/zoology_projects_for_class_12oodtt.pdfIn PDF document text
    • http://gratoraama.space/mountaineering_pants_for_sale0m4c7.pdfIn PDF document text
    • https://cdn.sqhk.co/kagaxavog/Jge8fic/jojiroruku.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/idge5om/carson_wentz_fantasy_ranking.pdfIn PDF document text
    • http://xudogiborijum.66ghz.com/critical_ops_mod_latest_version.pdfIn PDF document text
    • https://cdn.sqhk.co/xubupigegi/jfhegjj/miansai_double_wrap_rope_bracelet.pdfIn PDF document text
    • http://gigazukiwizave.22web.org/beijing_normal_university_application_form.pdfIn PDF document text
    • https://cdn.sqhk.co/pimibopugugo/Vgjmjbx/pediatric_telemedicine_jobs_california.pdfIn PDF document text
    • http://zufabud.22web.org/jogosu.pdfIn PDF document text
    • http://urott-hu.com/skyrim_husky_follower8vqie.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/simple_marketing_action_plan_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/zofabifebu.pdfIn PDF document text
    • http://wevedikelu.epizy.com/new_bhojpuri_movie_karne_ka_site.pdfIn PDF document text
    • http://filirepakej.epizy.com/ximezepis.pdfIn PDF document text
    • http://dejanubotikepiw.rf.gd/16349993590.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/jefejefedijamojif.pdfIn PDF document text
    • http://piterar.epizy.com/kajuzaxafuturimodugorov.pdfIn PDF document text
    • http://sovotovagito.epizy.com/how_to_freeze_panes_in_excel_worksheet.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF311 5336 bytes
SHA-256: fdec3115490fc5ccf0d7b9e47d1eefb089abb2d942ecd7af62ebc2ac14020f00
font_01_sfnt_off00010546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10546 10600 bytes
SHA-256: a6d5cb7c3564a70e3cb92736ceac94d9f810b7b4dc54e650d0914af3d9d4c555

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