Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bbf023b24cb6a33…

MALICIOUS

PDF

85.9 KB Created: 2021-05-06 01:11:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 6f58af7180b8c52dc726d3ac2d8024b8 SHA-1: 15c3ffa4e22853a0534f4fbac71a50c1ffee9b29 SHA-256: 5bbf023b24cb6a3359955384f18ab2d7a8cc057f01cb61d61d71a2a7fe25f96c
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, including one to 'zajinet.ru' and a disposable hosting link 'calipshatngaccs1.xyz', suggesting it functions as a link farm to redirect users to malicious sites. The document body is heavily obfuscated and appears to be junk data, but the presence of external links and the overall heuristic firings strongly suggest a phishing or scam campaign.

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
  • 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://zajinet.ru/strik?utm_term=chocolate+war+summary PDF link annotation
    • http://calipshatngaccs1.xyz/jotexijirenefegarildxxh2.pdfIn PDF document text
    • http://lnstagramcopyrightservices.org/agrobacterium_mediated_transformation_steps855q1.pdfIn PDF document text
    • http://tosugev.iblogger.org/cultural_adjustment_theory.pdfIn PDF document text
    • https://cdn.sqhk.co/jimevexir/dNhhbif/maxpreps_az_swimming.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/Xnjaihs/detective_pikachu_full_movie_free_stream.pdfIn PDF document text
    • http://kyponnik.online/2252436266wl3gf.pdfIn PDF document text
    • https://cdn.sqhk.co/kavonalitego/hbXhfWq/drip_art_photo_editor_apk_download.pdfIn PDF document text
    • http://hayatevesigar.online/can_you_ride_the_ender_dragon_on_xbox1rfkf.pdfIn PDF document text
    • http://verefdliyvtorogo.xyz/lasko_oscillating_fan_with_remote_controlyeg6k.pdfIn PDF document text
    • https://xavujome.weebly.com/uploads/1/3/0/7/130739328/sagigevag.pdfIn PDF document text
    • https://cdn.sqhk.co/senuziker/cheA5jG/82901283412.pdfIn PDF document text
    • https://ruritavi.weebly.com/uploads/1/3/3/9/133988031/kajidujabosapuweni.pdfIn PDF document text
    • https://cdn.sqhk.co/puxezuxivas/hhHJ9xA/hd_movies_free_download_app.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2614a99-953e-4605-b7e9-414ef8a661d6/ligirepapigojofisesake.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/bootcamp_for_macbook_air_2010.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/college_algebra_and_trigonometry_kaufmann.pdfIn PDF document text
    • http://bifezuragumizi.rf.gd/36528940439.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8ba6481-d2ab-40a0-9a63-11d23f5262e8/sokavorametisu.pdfIn PDF document text
    • http://vodupuginotipir.rf.gd/74190234841.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52d0db27-cc33-4372-a953-47108bb152c7/dirt_devil_power_max_upright_vacuum_cleaner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91fb59ad-7b85-40c5-a608-5395a96feca6/data_center_physical_security_audit_checklist.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c65d2b9e-93c6-4068-b483-dd85a3b9f0bf/42529150860.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_off000113fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113FA 5140 bytes
SHA-256: 254e4baaef8fdfc2e6dc9a48562c11617af86c3094f371b166673cd29cc0f253
font_01_sfnt_off0001255c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1255C 10776 bytes
SHA-256: 34cf09a91eb8d7de29d08d10ca50baacc689d8b3fea684c44dcdcaefce9ae32b

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