Malicious PDF — malware analysis report

Static analysis result for SHA-256 b116d92dbf0ab288…

MALICIOUS

PDF

74.0 KB Created: 2021-01-23 11:11:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 0775c6adbfab22b6c6eddd785cf604f5 SHA-1: 1e93f6f0b6dddc28645eefc526eba9919eec121a SHA-256: b116d92dbf0ab288d9e5065df7c74dba243042985b5ac2bd23261e1848d3f354
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, identified as a link farm, with many pointing to disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and external links suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/123?utm_term=united+in+peace+inc PDF link annotation
    • https://cdn.sqhk.co/fezemepusap/eCjcjfx/juwuwoviwowar.pdfIn PDF document text
    • https://cdn.sqhk.co/bitaxukezor/iijjdhj/luke_bryan_tour_wiki.pdfIn PDF document text
    • https://gabejopow.weebly.com/uploads/1/3/4/5/134597712/3580225.pdfIn PDF document text
    • https://nodifolosorak.weebly.com/uploads/1/3/4/7/134758422/rajowadewafaza-xizejabizuso.pdfIn PDF document text
    • https://xonujofepip.weebly.com/uploads/1/3/4/3/134385468/mepuxorazudukekok.pdfIn PDF document text
    • https://cdn.sqhk.co/guzunilepin/jelhehd/aaa_phone_number_customer_service.pdfIn PDF document text
    • https://cdn.sqhk.co/gemadaruvow/72Pia17/start_your_own_wedding_planner_business.pdfIn PDF document text
    • https://cdn.sqhk.co/depifozopupe/gjj1Bih/dezisagulufogalibasogor.pdfIn PDF document text
    • https://cdn.sqhk.co/gudijupimeb/hgQjhhg/netflix_movie_download_free.pdfIn PDF document text
    • https://cdn.sqhk.co/wazafanez/dMha9ha/bubble_tea_house_roseburg.pdfIn PDF document text
    • http://torevifij.iblogger.org/bivawilasolavuwilofovupov.pdfIn PDF document text
    • https://wojadamizaxit.weebly.com/uploads/1/3/2/6/132681796/286472.pdfIn PDF document text
    • https://cdn.sqhk.co/wosuzumamig/ghghUjj/lemonade_scones_recipe_easy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mibofive.epizy.com/world_economic_forum_global_competitiveness_report_dataset.pdfIn PDF document text
    • http://xipipowateselok.epizy.com/examples_of_spreadsheet_software_programs.pdfIn PDF document text
    • http://porininiji.epizy.com/41710917058.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_off0000e48b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE48B 4752 bytes
SHA-256: 32f260aa6c368e171f95299e78e8ae0fea97f982616efbfe0bf8dd9d1ab359d8
font_01_sfnt_off0000f4d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D1 11196 bytes
SHA-256: 642e3bdfa810806ed373dd5ab739c0f948fc9ebc2ee8d010cc045ceff36381a7

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