Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4703699338ec31b…

MALICIOUS

PDF

75.0 KB Created: 2021-03-27 14:43:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 05ea0ebcbbbeb984995e4b417b6c3d56 SHA-1: 5bf0d602286dd9fd3f3c378b62e1042877a3b35c SHA-256: f4703699338ec31b0de563d4f6ee8b9307316a77bb32afeef0a67fae8904f31a
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm with numerous external URLs. The heuristics indicate a high density of links pointing to disposable hosting, suggesting an attempt to distribute malicious content or conduct phishing. While no scripts were explicitly extracted, the PDF structure and the nature of the URLs strongly imply an intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://dugedepap.ru/wix?keyword=the+warrior+within+you+pdf PDF link annotation
    • http://witaxolexigabi.mywebcommunity.org/nefuzesawalororodub.pdfIn PDF document text
    • https://raxiruzaxulam.weebly.com/uploads/1/3/0/7/130738564/9432458.pdfIn PDF document text
    • https://tewazaxapij.weebly.com/uploads/1/3/4/8/134873756/e43327ef800.pdfIn PDF document text
    • https://gadakuvinud.weebly.com/uploads/1/3/1/8/131871823/7712765.pdfIn PDF document text
    • http://mavigawika.scienceontheweb.net/17420769010.pdfIn PDF document text
    • https://xutogimumunode.weebly.com/uploads/1/3/4/3/134375265/fogumowa.pdfIn PDF document text
    • https://lunejuwibamir.weebly.com/uploads/1/3/4/5/134587588/xajit.pdfIn PDF document text
    • http://koparikamoze.scienceontheweb.net/predicting_products_of_chemical_reactions_practice_worksheet_answers.pdfIn PDF document text
    • http://faxozulakevosos.iblogger.org/simosarowuv.pdfIn PDF document text
    • http://linefesejewug.sportsontheweb.net/basic_java_programming_tutorial_free_download.pdfIn PDF document text
    • http://rumigiwataj.getenjoyment.net/taxudeguxobibovunuvudanuj.pdfIn PDF document text
    • http://zitosuganenat.medianewsonline.com/bernard_mandeville_la_fabula_de_las_abejas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2d130471-2a64-48ba-87cf-8f1e86c6acad.filesusr.com/ugd/9c43ec_23168483727a4188a9db952a2a09e04c.pdf?index=trueIn PDF document text
    • https://43a2ba88-5de9-465b-b95f-6a4d82f2d06e.filesusr.com/ugd/dcbeda_db548128d4f44e658c33f7956059fe7d.pdf?index=trueIn PDF document text
    • https://fed4949e-3809-4fc0-a28b-84c5d390f589.filesusr.com/ugd/94482e_1d41c6c3e6a8476abfaa6ad90506f5b0.pdf?index=trueIn PDF document text
    • https://7a579b3f-ce96-4c66-abdc-991530493d29.filesusr.com/ugd/010c6b_908732e53c1b4414abeec082ca1b05ca.pdf?index=trueIn PDF document text
    • http://mamisiz.rf.gd/bienestar_psicologico_tesis.pdfIn PDF document text
    • http://jusudab.epizy.com/animal_cell_culture_by_ian_freshney_download.pdfIn PDF document text
    • http://xilubera.rf.gd/are_there_polar_bears_in_alaska.pdfIn PDF document text
    • http://kimejuj.rf.gd/sex_and_the_city_3_date_de_sortie.pdfIn PDF document text
    • https://ddd59a73-be73-4575-bd7b-2e5900175f8b.filesusr.com/ugd/5dc0ef_3b1fd646e68e46b59d8199544ca81ced.pdf?index=trueIn PDF document text
    • https://78ff948a-0765-49f5-a22c-0fbe0eba7848.filesusr.com/ugd/888d0b_71b654c95bd74832a8c67e965d15576c.pdf?index=trueIn PDF document text
    • https://b1b1ed1d-a631-407f-b8a0-2f609481a9c2.filesusr.com/ugd/3e5895_2160de4e9d8d4d92be61fa72505fc4b6.pdf?index=trueIn PDF document text
    • https://63995da9-74be-4895-8497-a4fa53c9845d.filesusr.com/ugd/788c84_e4ce03f70a474efd9dc15ab67a9aefa0.pdf?index=trueIn PDF document text
    • https://1b6fbac1-9b66-4609-9151-81f5d4c316f7.filesusr.com/ugd/5e81b9_b96fb2e58e5d433d8acaf6ba227c4a1d.pdf?index=trueIn 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_off0000e9af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AF 5064 bytes
SHA-256: be36c1e8b0d62229e269e0624663427b6258e45cd7425e3e37ab2eaecbe9e79a
font_01_sfnt_off0000fafb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFB 10580 bytes
SHA-256: fe00f447b04eaa2b75fef4350956043a239bb584510d3a23c6b246a55712151b

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