Malicious PDF — malware analysis report

Static analysis result for SHA-256 afbd6891843149e3…

MALICIOUS

PDF

73.3 KB Created: 2021-03-04 05:01:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 3760686921453ce75273ac3f9ded776b SHA-1: e5ab4bac67fb4fb9e4447e660e6a6fd7fc6ec406 SHA-256: afbd6891843149e3183a68fba093cedd6ee4b9eea1c6a100c121eebdcbdb8d22
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to potentially harmful content. The presence of external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/wix?keyword=realm+royale+android+apk PDF link annotation
    • http://metinozub.iblogger.org/3m_di-_noc_spec_sheet.pdfIn PDF document text
    • http://copyrightmediahelp.com/66968009512r44h6.pdfIn PDF document text
    • http://yoga-italy.space/jevunurugingmek.pdfIn PDF document text
    • http://xtrading.buzz/java_swing_tutorial_using_netbeansk32u2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368731/normal_5fe7ea869cffc.pdfIn PDF document text
    • http://podarokinsta.site/jacoco_merge_reports_mavenpgs48.pdfIn PDF document text
    • http://power-guard.shop/my_epson_printer_is_printing_blank_pages_from_my_macwwz2q.pdfIn PDF document text
    • http://deemonatrafik.xyz/764491406420ckad.pdfIn PDF document text
    • http://profapp.pro/tazizixinatojo8zf37.pdfIn PDF document text
    • http://bachanalytics.com/ssc_challan_form_download_201936c7k.pdfIn PDF document text
    • http://xevuwelepudexo.iblogger.org/ctv_news_sudbury_reporters.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://geforagegi.atwebpages.com/75469134208.pdfIn PDF document text
    • http://sabiwilurase.atwebpages.com/tara_brach_books_in_order.pdfIn PDF document text
    • http://konazosite.epizy.com/vazisanerekazuzusokolal.pdfIn PDF document text
    • http://denakisewir.epizy.com/1st_grade_spelling_worksheets_free_printables.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_off0000df95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF95 5100 bytes
SHA-256: 9c5c832cc955d77009a4ff04ef1d1ff1e45c87c4e4dae9ab94c6aa64b1cd69b6
font_01_sfnt_off0000f0e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E8 13076 bytes
SHA-256: 45a8046ae763e0908d08fecafbf72452273e50a237d5e37e1365f1b8951c1c65

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