Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa308d14bec2e439…

MALICIOUS

PDF

79.6 KB Created: 2021-03-30 21:17:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: ebb8cac92af033dffab4c34a24b7bb35 SHA-1: 2e303eacd4283526ea28f1406313a4c8e2cf1bbd SHA-256: fa308d14bec2e439129e8e6b625beecb48c7431050c08778678d02024cc88380
126 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing document and a link farm on disposable hosting. The embedded URL points to a domain that is likely malicious and associated with a phishing lure. Although no scripts were extracted, the overall structure and URL suggest an attempt to redirect users to a malicious site for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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/strik?utm_term=how+to+fly+the+helicopter PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415745/normal_603f92762e3e2.pdfIn PDF document text
    • http://vuzitofakomuj.22web.org/nudojaja.pdfIn PDF document text
    • http://ramerofebib.iblogger.org/lagamomenuzuxuxufom.pdfIn PDF document text
    • http://repochka.site/97878769343xjmcv.pdfIn PDF document text
    • http://albl.ru/wumowimofadofusafirujevetul3mo.pdfIn PDF document text
    • http://uscreditcheck.info/how_to_change_manual_transmission_to_auto_transmissionw9ii6.pdfIn PDF document text
    • http://repaircreditscore.info/bosch_fridge_manualz3lkn.pdfIn PDF document text
    • http://smartycredit.info/distinguish_between_essential_and_natural_boundary_conditionsaubrd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465704/normal_5fc5cb2e1202a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478383/normal_604cc34265d7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387939/normal_5fd643c845eb9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://22520ec4-2132-45a5-98b8-54db1b71d3ea.filesusr.com/ugd/b33b96_e553f90aefc644b9ac373afd252e623b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d06b77d4-5b89-42a5-a32d-081f663bca22/sawisonapojarala.pdfIn PDF document text
    • https://9e9203d9-9f5b-42f2-a849-05e42d741f90.filesusr.com/ugd/3527d5_97feb780017041a79cbeb1fba92dbfe2.pdf?index=trueIn PDF document text
    • https://11f44e1d-c86f-4be6-baa1-90970e7c24f5.filesusr.com/ugd/a298ce_2b812fd3be844d5eba8d0ba3cc55c0ab.pdf?index=trueIn PDF document text
    • http://nuwalowu.rf.gd/suvapajogapuma.pdfIn PDF document text
    • http://wexugemo.epizy.com/cod_fishing_reports.pdfIn PDF document text
    • https://b6e49935-6d58-4bde-831f-6e0b746776d3.filesusr.com/ugd/7d321f_fe0c5877689f4efd8f1664b4a1752d04.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e928634c-b194-4932-a338-c453714f4c28/delta_shopmaster_scroll_saw_ss200_parts.pdfIn PDF document text
    • https://6a421494-2577-4416-904f-e17348f56b63.filesusr.com/ugd/85e76a_afea819b7e6048de80b18b4e94bd9099.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ede7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE7 4552 bytes
SHA-256: 4c0412f0222e5db5dbf51f11f4281826144de5d8c23c058a4ce9a5dfe17e5c52
font_01_sfnt_off0000fd86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD86 11044 bytes
SHA-256: 292490b7c567f3980dbad35e5f9d06e39ad434adf4daa7ca7140351671396514
font_02_sfnt_off000122d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122D0 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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