Malicious PDF — malware analysis report

Static analysis result for SHA-256 9234442b2b61be39…

MALICIOUS

PDF

71.2 KB Created: 2021-03-06 05:51:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 44672cef7bb17fd5684c181c13990ae6 SHA-1: ff9d4573b42caa7bf20388b952ac2782445ae72c SHA-256: 9234442b2b61be39ac889f19545a0d096a9fa80c9e27e68c3dfbe63c6830298d
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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 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.
  • 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://crophysi.ru/award?keyword=brinkmann+smoke+n+grill+stainless+steel In PDF document text
    • http://debegezuvume.iblogger.org/zizifofurafaru.pdfIn PDF document text
    • http://vutanari.22web.org/element_ui_template_scope.pdfIn PDF document text
    • https://tikiruwilowu.weebly.com/uploads/1/3/1/1/131163793/9737919.pdfIn PDF document text
    • http://fikapopupalake.iblogger.org/how_to_clear_cpc_exam_in_first_attempt.pdfIn PDF document text
    • https://fezuwarojeti.weebly.com/uploads/1/3/1/3/131383544/7d1ebf8.pdfIn PDF document text
    • http://barisetufor.66ghz.com/el_ser_uno_iii.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/ba43e5f9-0f24-46da-89c7-59f447ecb658/twilight_2008_full_movie_hd_download_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/785ddc86-457d-45bd-8c3b-fee2c271f817/81523992255.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88a7b3c5-b031-4a2e-a1d2-ec5b7b054860/dictionary_of_architecture_and_construction.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/articles_of_incorporation_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a6a5e42-41be-4293-ab95-68dfda1cb9ba/jufafugubididubu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2ebd94e-f083-4102-ad5e-b9d4fab7f397/head_first_pmp_new_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/38931196494.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3466349-8519-4751-a570-b88159cbf3c5/vuramelekoli.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/1777075034.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7812aba-85fc-47b1-ac33-377fc331eda3/best_book_to_learn_medical_terminology.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/perforated_plastic_sheet_cross_stitch.pdfIn PDF document text
    • http://wijogural.epizy.com/admin_template_html_css_bootstrap_free.pdfIn PDF document text
    • http://revuzinolijafit.epizy.com/menutolatiloxase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b8aaa12-0f42-402a-9237-0077bba41b52/photo_of_happy_gandhi_jayanti.pdfIn PDF document text
    • http://doroxokile.epizy.com/sony_wireless_bluetooth_headset_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe0fbca7-f6a2-49ce-b1bf-bbb568287c8c/did_jacob_really_kill_in_defending_jacob.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_off0000da66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA66 5116 bytes
SHA-256: 5be99b1a7702e65fcf3b879b6f8ece7569d80500e620b3e2739c4e80fe9972bc
font_01_sfnt_off0000ebb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB8 10480 bytes
SHA-256: 899b0729706331e4334306457683e0020518d5a8b1c4ba7e65ab9f5e18818a0c