Malicious PDF — malware analysis report

Static analysis result for SHA-256 600b9d1ca888a5ad…

MALICIOUS

PDF

90.9 KB Created: 2021-03-15 04:46:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 2b4a2038d86fa334681f0eab9f86b993 SHA-1: 50383d8e450c520065e75464d5999d6b36543453 SHA-256: 600b9d1ca888a5ad66f2492e2f4703adc6ed1214fd02c1a6d39e795fccd5be61
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing or distributing further malware. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic specifically flags this behavior. While no scripts were directly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to malicious content, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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://midufefew.ru/strik?utm_term=un+mundo+feliz+audiolibro PDF link annotation
    • http://mowefopovog.mywebcommunity.org/budismo_moderno_livro.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/gjEHhfa/significado_de_preludio_en_el_diccionario_espanol.pdfIn PDF document text
    • https://cdn.sqhk.co/puxedepobe/jjeSVJd/kupafukivu.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/hxsdpwz/minecraft_server_build_battle_cracked_1._12_2.pdfIn PDF document text
    • http://vejofewi.iblogger.org/nopetifuxuvakafef.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/IDajcjf/download_hide_io_mod_apk_terbaru.pdfIn PDF document text
    • http://mir23.xyz/50958747413eqyqs.pdfIn PDF document text
    • https://cdn.sqhk.co/fowurona/wiihcgf/unleashed_pixel_dungeon_apk.pdfIn PDF document text
    • http://insta-sale.site/rca_rt151_home_theater_system_remote_controlsbx8s.pdfIn PDF document text
    • http://malanefire.sportsontheweb.net/la_otra_historia_de_mxico_diaz_y_madero_gratis.pdfIn PDF document text
    • http://bamupiwabibajew.mywebcommunity.org/wubaroxejujuk.pdfIn PDF document text
    • http://hookup154.site/european_glaucoma_guidelines_2017efj33.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gitinilu.epizy.com/darkness_rises_assassin_pvp_skill_guide.pdfIn PDF document text
    • http://fatigovonid.rf.gd/94853642908.pdfIn PDF document text
    • http://jedirolin.rf.gd/senulokisiginatuwileke.pdfIn PDF document text
    • http://famebod.epizy.com/gorop.pdfIn PDF document text
    • http://kotalozobazad.rf.gd/who_is_the_current_chief_of_army_staff_in_nigeria_2020.pdfIn PDF document text
    • http://jizozekawa.epizy.com/fivutixav.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/free_anonymous_vpn_for_chrome.pdfIn PDF document text
    • http://kosezofejesuxef.atwebpages.com/candidiasis_oral_bebes.pdfIn PDF document text
    • http://fonumelipo.rf.gd/5302231314.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/2702176418.pdfIn PDF document text
    • http://zatugawaxevi.rf.gd/mubazegemijipojadetewet.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/76630900411.pdfIn PDF document text
    • http://lusajafimaneru.myartsonline.com/can_a_18_year_old_date_a_16_year_old_in_maryland.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB81 6588 bytes
SHA-256: 746cda19d0a45b0d6108c63ff8192b2f88c2fff5e5937e692a7cb04b31166607
font_01_sfnt_off0000fbfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBFB 5056 bytes
SHA-256: 64c41f90d1d10d394b7189c955611ef603e02630d438314fc77574cff7847c47
font_02_sfnt_off00010d12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D12 5220 bytes
SHA-256: 99ffea0217cf0baa7bd6ddf721dfaefd8b5f69da415d48780f9c18065281662b
font_03_sfnt_off00011f1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F1D 11836 bytes
SHA-256: 1b9b6ea1e43f5da1ea5ac39836fe3d81add26cb3bf19478505f0b1b8739b0299
font_04_sfnt_off00014624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14624 16092 bytes
SHA-256: 2c5f1a2e3d9f683f6a217a47aeaaae813f7d4ef732a5ff54a929695507d09140

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