Malicious PDF — malware analysis report

Static analysis result for SHA-256 96e1df1b91f2dac9…

MALICIOUS

PDF

78.1 KB Created: 2021-02-10 17:32:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: ff3f69adafa7ea6ab7e43a920ef77099 SHA-1: 7cf8957ea64afcad4152d2feb19fad8d6abdba41 SHA-256: 96e1df1b91f2dac9a5bacbe4dedaa9f5009cb4b97f51b02a6cf1c8d5acda404e
126 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, many hosted on disposable domains or link farms, suggesting a phishing or redirection scheme. The PDF structure and embedded content, while heavily obfuscated, are consistent with attempts to deliver malicious payloads or redirect users to malicious sites.

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://druttle.ru/123?utm_term=movie+titles+italicized+or+quotes+chicago+style PDF link annotation
    • https://xevulesej.weebly.com/uploads/1/3/0/8/130874496/2430811.pdfIn PDF document text
    • http://dorightunion.com/bushnell_tour_v2_slope_manualsrkui.pdfIn PDF document text
    • https://cdn.sqhk.co/feletitami/bhjdjez/baby_alive_videos_for_kids.pdfIn PDF document text
    • https://nesamakamaxo.weebly.com/uploads/1/3/1/6/131636712/4820661.pdfIn PDF document text
    • https://cdn.sqhk.co/wituruxa/Eheohen/twistee_treat_franchise_for_sale.pdfIn PDF document text
    • https://sirowatogiwu.weebly.com/uploads/1/3/2/8/132814809/9502550.pdfIn PDF document text
    • https://pibigetikuke.weebly.com/uploads/1/3/5/3/135387636/e636a52.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/7jjdhai/irctc_rail_connect_login_problem.pdfIn PDF document text
    • http://mantenancie.com/relion_manual_3shihc.pdfIn PDF document text
    • http://heartcenteredequestrian.com/simple_compound_and_complex_sentenceo2rom.pdfIn PDF document text
    • http://reestr.site/5792701721rwjv8.pdfIn PDF document text
    • http://matrixbicycles.com/internship_survival_guide_4th_edition3vo2e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://magikid.epizy.com/faxaradibusajemow.pdfIn PDF document text
    • http://lojosikol.epizy.com/gejos.pdfIn PDF document text
    • http://jumezezufa.rf.gd/buckeye_local_schools_report_card.pdfIn PDF document text
    • http://kegipufi.rf.gd/voragunarutubogulajum.pdfIn PDF document text
    • http://jeragapa.epizy.com/aagadu_movie_comedy_scenes_free.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_off0000f2fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FA 5544 bytes
SHA-256: 60f8dafd27b93b787dafbf165a174e13a69b0363c4883abf5303df74b4b95ab5
font_01_sfnt_off000105e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105E3 10916 bytes
SHA-256: c201d1df158201b0aca40a3a4671ecc3697c4b11f978457d186a600544a725a6

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