Malicious PDF — malware analysis report

Static analysis result for SHA-256 c053ed4ed1adb00c…

MALICIOUS

PDF

73.8 KB Created: 2021-02-27 23:53:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: eb7ef239425b22140e3f5e783349d58e SHA-1: a0426b5224989615b5b0d5b93f57ea027d974193 SHA-256: c053ed4ed1adb00ca0a7d53babe2328939c0af6a088d969ba833b0e24b257362
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 a large number of embedded URLs pointing to disposable domains, indicating a link farm designed to redirect users to potentially malicious sites. The presence of external URIs and the link farm heuristic strongly suggest a phishing or malware distribution attempt.

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://mezovuduw.ru/123?utm_term=massey+ferguson+165+weight PDF link annotation
    • http://suvuxivenorum.mypressonline.com/79227644024.pdfIn PDF document text
    • http://wikowezenitezo.medianewsonline.com/18771204299.pdfIn PDF document text
    • http://zodatowafe.getenjoyment.net/what_is_phrase_structure_in_syntax.pdfIn PDF document text
    • http://lirinevewafa.mypressonline.com/19866064070.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492240/normal_6026f3229e513.pdfIn PDF document text
    • http://jomotew.iblogger.org/92107485841.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451230/normal_5fca0839efc98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410013/normal_5fe2bdd586cb5.pdfIn PDF document text
    • http://bomaduworofa.medianewsonline.com/52169131437.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/wutezigojuxi/60770627234.pdfIn PDF document text
    • http://xowobovu.myartsonline.com/21697990839.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/binary_option_trading_platform_reviews.pdfIn PDF document text
    • http://movedubeliw.epizy.com/prime_minister_s_awas_yojana_application_form.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_off0000e28e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE28E 5524 bytes
SHA-256: 1dfaf7e065f79d124ab224725838d1631760070d5d0e9cee079df5a7d0f7f2b2
font_01_sfnt_off0000f58c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF58C 11140 bytes
SHA-256: 2011ac2b8f5474835be802b3d1504a25b65a7cda7f66673e9c26013cf6ece1e5

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