Malicious PDF — malware analysis report

Static analysis result for SHA-256 e804cc0570e0f5d2…

MALICIOUS

PDF

71.6 KB Created: 2021-03-09 01:51:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 3fd4210998ebc7d299df324d7be34454 SHA-1: 9e37d9e7bdb58100e139413c4f1f167d70c9acb6 SHA-256: e804cc0570e0f5d2bdc82738127a4b732df1dc3919e9087b456651214d425eed
126 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it functions as a link farm hosted on disposable domains. The embedded URLs, such as https://seumenha.ru/award?keyword=aconex+api+pdf, suggest an attempt to direct users to potentially malicious or phishing sites. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://seumenha.ru/award?keyword=aconex+api+pdf PDF link annotation
    • http://stixlife.info/nyu_employee_health_and_wellnessn0g7n.pdfIn PDF document text
    • http://wodidovurezugeg.22web.org/70167185131.pdfIn PDF document text
    • http://copyrightsupporthelpcenter.com/aromatic_compounds_mcqsncqzi.pdfIn PDF document text
    • https://cdn.sqhk.co/naveropifo/uwihidm/16378754458.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500882/normal_6013105a4aa7a.pdfIn PDF document text
    • https://cdn.sqhk.co/tajugajobib/IBeLghJ/slingo_arcade_free_coins.pdfIn PDF document text
    • https://cdn.sqhk.co/fufeboxeri/Qifiija/bapimejabo.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/7IXBiVj/absolute_rc_plane_simulator_apk.pdfIn PDF document text
    • http://paganel.world/acrylic_sheet_cut_to_size_b_qvx1b2.pdfIn PDF document text
    • https://cdn.sqhk.co/xejadukoxeta/fLRKhfP/golden_spike_inn_rapid_city.pdfIn PDF document text
    • http://famafivas.iblogger.org/beneficial_ownership_secure_search_system_act.pdfIn PDF document text
    • http://pannochki-art.com/dell_optiplex_790_motherboard_bios_update8gq03.pdfIn PDF document text
    • http://nulatapukedu.scienceontheweb.net/avaya_one_x_agent_2.5_13_download_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417817/normal_5fe792efdd9fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498348/normal_5ff1169466cc0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zogosugo.onlinewebshop.net/35667562011.pdfIn PDF document text
    • http://lokuvutifinulef.rf.gd/guriwajojatigevoxari.pdfIn PDF document text
    • http://zezofakarol.myartsonline.com/28202068813.pdfIn PDF document text
    • http://zotubune.myartsonline.com/what_are_the_ages_of_kohlbergs_stages_of_moral_development.pdfIn PDF document text
    • http://jijaxiroloru.rf.gd/brandsmart_usa_dadeland_miami_fl.pdfIn PDF document text
    • http://momewitu.epizy.com/drilling_stainless_steel_sheet.pdfIn PDF document text
    • http://budejigejemuje.rf.gd/zejosimow.pdfIn PDF document text
    • http://pabudixobo.epizy.com/nintendo_ds_lite_date_de_sortie.pdfIn PDF document text
    • http://xizokenimufewom.atwebpages.com/83328265328.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_off0000dd04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD04 4900 bytes
SHA-256: 5e767532f62352efdbe0a0a9d33337065d73ee047fe3e9449a3e61ba0b277b5f
font_01_sfnt_off0000edd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD7 10296 bytes
SHA-256: d59dc8a8be7b9d6341de747fa023135f89d5fc993c97017d69bebfb1070325a7

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