Malicious PDF — malware analysis report

Static analysis result for SHA-256 8069ebade4c26a1b…

MALICIOUS

PDF

70.1 KB Created: 2021-03-13 16:19:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 57eb9d58520cff2a1b63d9ce315a6b47 SHA-1: 5229588d94480809d2731a843074faf3f767afc6 SHA-256: 8069ebade4c26a1bb4d23cdf402511bebf93f036702dd2737884b230753ddf46
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection (Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0) and an ML classifier. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing attempt. The primary malicious URL identified is https://soxebez.ru/award?keyword=business+process+reengineering+pdf+free+ebook.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/award?keyword=business+process+reengineering+pdf+free+ebook PDF link annotation
    • https://cdn.sqhk.co/nizufalagef/hcigQ7j/deep_space_images_hd.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/bjgGNi4/plex_player_ios_free.pdfIn PDF document text
    • https://cdn.sqhk.co/bobudozoke/fZicidl/tugozubufuj.pdfIn PDF document text
    • https://dujuwugad.weebly.com/uploads/1/3/4/7/134721680/mojijupakurofer.pdfIn PDF document text
    • https://rofexelugikovu.weebly.com/uploads/1/3/4/7/134732340/kedadajapigeli-sakaj.pdfIn PDF document text
    • http://belkwigs.com/what_are_the_chapters_in_the_new_testament4mbnp.pdfIn PDF document text
    • https://xomikevogonenoj.weebly.com/uploads/1/3/4/7/134743799/1938924.pdfIn PDF document text
    • http://copyrightsupportforlnstagram.com/how_much_water_do_i_put_in_my_presto_pressure_cannera45um.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/8eb1640c-8488-4a30-94dd-3041e4fb2be9/biblia_interlineal_hebreo_espanol_online.pdfIn PDF document text
    • http://bexinoj.epizy.com/89831375753.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72a3eae1-b9cd-4c3a-a0cc-bb67f0e8db6a/vba_excel_word_save_as.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d4b33cc-16a8-4500-88d5-802244d7c048/number_flash_cards_printable.pdfIn PDF document text
    • http://vesavakiri.epizy.com/44832397430.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d3f06bf-33f3-4edc-ab7f-0a6d327a3d12/26962893885.pdfIn PDF document text
    • http://tazefuwavubu.rf.gd/it_will_be_alright_synonym.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6add1b52-ae16-4df7-959c-1faac37c6afa/bazibulisosaguwer.pdfIn PDF document text
    • http://fejivexol.epizy.com/nupuviwefiwegekimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f551fb67-71a1-48b7-a838-ce424a8cb1a1/battery_tender_jr_red_light_stays_solid.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_off0000d332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD332 5332 bytes
SHA-256: 8367603a2573fa62af892f1ea8134f686260812eac9746d57342fda620c49398
font_01_sfnt_off0000e56b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE56B 10568 bytes
SHA-256: aa4a88520da01ee8877649c23a7af0c9450334d057274749c20c66b615eac393

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