Malicious PDF — malware analysis report

Static analysis result for SHA-256 180e0e9f7c349991…

MALICIOUS

PDF

72.9 KB Created: 2021-03-05 09:11:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 63ea6b6e4da5ca6deb34da68ccc2efb0 SHA-1: 596478c78e2fd832ceed317c9d54325021be6d24 SHA-256: 180e0e9f7c34999185cd05a23b16bd2d3d938ffef785b3598ec0724f99ed0e7f
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to distribute malware or conduct phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links point towards a malicious document, likely intended to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/award?keyword=honda+gcv160+maintenance+manual PDF link annotation
    • https://kopabiziruzoxol.weebly.com/uploads/1/3/1/4/131406592/6656917.pdfIn PDF document text
    • https://jumozavuna.weebly.com/uploads/1/3/4/5/134598597/kogewiro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409610/normal_60024925a8537.pdfIn PDF document text
    • https://wujuwali.weebly.com/uploads/1/3/5/3/135326068/afe46dd22d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480412/normal_60215bc83bb3e.pdfIn PDF document text
    • https://jelugofinetala.weebly.com/uploads/1/3/5/3/135389066/pedoz-godazuliliponiv-gupawuxamixa-mewosoza.pdfIn PDF document text
    • http://revenularozudo.66ghz.com/basic_unix_commands_with_syntax.pdfIn PDF document text
    • https://welavomuwaj.weebly.com/uploads/1/3/4/6/134633166/55fadbcf21.pdfIn PDF document text
    • https://sobexezawatu.weebly.com/uploads/1/3/4/9/134903145/4464375.pdfIn PDF document text
    • https://kiniwotonupit.weebly.com/uploads/1/3/0/7/130776343/sofokinub.pdfIn PDF document text
    • https://gixunilaw.weebly.com/uploads/1/3/1/8/131856646/foxabijif.pdfIn PDF document text
    • https://sodolujakuxef.weebly.com/uploads/1/3/1/3/131398606/ae004b.pdfIn PDF document text
    • https://ruvipubelid.weebly.com/uploads/1/3/4/6/134608961/9170227.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://buladuwe.rf.gd/que_diferencia_hay_entre_educacion_fisica_y_deporte.pdfIn PDF document text
    • http://zasizuv.rf.gd/american_bulldog_breed_information.pdfIn PDF document text
    • http://bevewimun.epizy.com/download_windows_10_for_free_on_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b170a5b3-8213-4e23-a490-0bd4c14db825/qual__o_significado_de_domingo_de_ramos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23e23e43-2faf-4207-ba58-05f5298697d2/1993_mercury_150_black_max_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d51b0be6-260b-4b71-bc85-77067316714d/graphing_two_variable_inequalities_worksheet.pdfIn PDF document text
    • http://pekufupudemolor.epizy.com/kunudidedujijakejidanugof.pdfIn PDF document text
    • http://xobirixogup.epizy.com/64710969184.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b9fac7c-c2fd-4233-a59a-866ece9631fd/3540256328.pdfIn PDF document text
    • http://poposumezaxek.rf.gd/five_feet_apart_book_parents_guide.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_off0000e182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE182 5356 bytes
SHA-256: 48e34c7726762b5ec1bbbbd1f8996081d676e913b67259ed51ea50f4ad74c8f2
font_01_sfnt_off0000f3b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B2 10160 bytes
SHA-256: 7b266a33c508e91a18021efee71447444a265954243817ef35ff775986439111