Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b477a0030fe2d18…

MALICIOUS

PDF

76.2 KB Created: 2021-02-11 21:48:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: eef6ae6940e1a58c7548ee952739f338 SHA-1: 2578afd4c08fa4d847970a00635a1907c29835a9 SHA-256: 0b477a0030fe2d188e4b5a474a558652a0ff3302f080fb58cee654bd0c87276c
184 Risk Score

Malware Insights

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

The file is a PDF containing numerous embedded links, many of which point to known malicious redirectors or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of multiple links to potentially malicious domains suggests an attempt to lure users to phishing or malware-hosting sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=gta%205%20cars%20wallpaper In PDF document text
    • http://yesnutural.space/169889459541wk0y.pdfIn PDF document text
    • https://cdn.sqhk.co/jufebarur/aheiMc0/rinawefo.pdfIn PDF document text
    • https://cdn.sqhk.co/sizozizaj/CDIlgdX/hero_sidekick_names.pdfIn PDF document text
    • http://drive4mclaneeffingham.com/the_game_of_life_rules_and_instructionsjysf7.pdfIn PDF document text
    • http://reduslim-europa.site/giluzuvegivubolodixaxeric3j2n.pdfIn PDF document text
    • https://cdn.sqhk.co/finulepaf/9jeaiiC/medicine_reminder_app_android_project.pdfIn PDF document text
    • http://atlas-copco.su/dbs_application_forml3oiv.pdfIn PDF document text
    • https://cdn.sqhk.co/mifimafonuku/dpid2ja/wifi_private_network_windows.pdfIn PDF document text
    • https://gulipuzajetag.weebly.com/uploads/1/3/5/3/135397689/metibumupure.pdfIn PDF document text
    • https://faxipanonuk.weebly.com/uploads/1/3/4/3/134352952/vivev.pdfIn PDF document text
    • http://goshop32.site/28204351998rlt57.pdfIn PDF document text
    • https://zixaderal.weebly.com/uploads/1/3/0/9/130969504/5bdc2b7ecf.pdfIn PDF document text
    • http://loveantravel.xyz/hempel_curing_agent_97050_safety_data_sheetctax7.pdfIn PDF document text
    • http://nnorm-id.com/analytic_geometry_word_problems_with_solutions7qptv.pdfIn PDF document text
    • http://olymptrade.buzz/luwopipukirikebutizudirivnki65.pdfIn PDF document text
    • http://zikapipumimapo.22web.org/subject_and_predicate_worksheets.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://suxijiwuxupan.epizy.com/filemaker_pro_16_advanced_user_guide.pdfIn PDF document text
    • http://gokobuvutojo.epizy.com/reading_comprehension_grade_3.pdfIn PDF document text
    • http://gavojomizam.epizy.com/inorganic_chemistry_shriver_atkins_free.pdfIn PDF document text
    • http://vedisupekak.epizy.com/genunamis.pdfIn PDF document text
    • http://lugimes.epizy.com/dulowedoj.pdfIn PDF document text
    • http://kaduxatij.epizy.com/informacin_sobre_la_bandera_de_honduras.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d65b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD65B 5176 bytes
SHA-256: 10289ac987168a3059cc70ae9ab29fc098763d863df774c88eb687aa18ff9b1c
font_01_sfnt_off0000e81f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE81F 11708 bytes
SHA-256: 4f8589b0c114ef1df62276449cd61e1ce3b7cd1f1c12e1db5533c8d75cd5f7b9
font_02_sfnt_off00010e14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E14 16164 bytes
SHA-256: 3afbc95f4a2677bf4c8b77bd7df62e4dbeb651db4b5e482cf97b58e472170d58

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