Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ce63807736088a4…

MALICIOUS

PDF

76.6 KB Created: 2021-02-25 12:40:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 311f9bac192c48daf531d45b747c5bf3 SHA-1: 8fcbac5514299284556a447a6f2cdb387ada0106 SHA-256: 1ce63807736088a43433241731f3fe55bb8a8918aebf1100f9c275595acebd2e
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, and one external URI that appears to be part of a link farm designed to redirect users. The presence of these elements strongly suggests an attempt to direct users to malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/strik?utm_term=jvc+kd-x330bts+wiring+harness PDF link annotation
    • http://hookup682.site/vevegefajikenobolezino730k2.pdfIn PDF document text
    • http://autokenn.com/23361366512cz2u3.pdfIn PDF document text
    • http://arnautmebel.ru/kenmore_elite_dishwasher_model_665_not_workingmp5s3.pdfIn PDF document text
    • http://fikapopupalake.iblogger.org/kafakuzomepivixusesodatul.pdfIn PDF document text
    • http://winoorama.fun/missouri_boating_exam_answersv9iah.pdfIn PDF document text
    • http://jadebey-x.com/bully_2_game_for_pcrbold.pdfIn PDF document text
    • http://ttttrrrr.space/why_is_my_printer_not_printing_the_black_inku3kkw.pdfIn PDF document text
    • http://shopwithsale.website/pubg_mobile_beta_version_0._14_0yy8ri.pdfIn PDF document text
    • http://luminar4-download.xyz/slam_book_software_free75lg3.pdfIn PDF document text
    • http://winoorama.space/el_puente_hacia_terabithia_245psh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tatikipebufufa.epizy.com/jexugesijazobupemofifuxi.pdfIn PDF document text
    • http://vomovawesojuti.epizy.com/pebajonojafasekekokim.pdfIn PDF document text
    • http://runodeb.rf.gd/aprendizajes_clave_quinto_grado_de_primaria.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/glistening_coat_creation_guide_where_to_buy.pdfIn PDF document text
    • http://gagelenobom.epizy.com/64554096560.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/6886191014.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/bearing_mathematics_form_5.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/mba_project_report_on_customer_satisfaction_survey.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/26052653327.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_off0000ec97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC97 5920 bytes
SHA-256: d505066efc0e54364698c90b21b49c3a17cfd08b652046e341f5c0445804c1e1
font_01_sfnt_off000100d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D5 10560 bytes
SHA-256: 730f27ddca8810ad361e81f03ead98fb971696b2f02e8ef73217b980fd9ec3c9

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