Malicious PDF — malware analysis report

Static analysis result for SHA-256 d01c2a5f22168e37…

MALICIOUS

PDF

78.3 KB Created: 2020-12-31 21:00:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ebcfc0fc5b1bb4be86a99ad11dbeb5c3 SHA-1: 558565f991fd2e32e998b6cd550ba657c729f979 SHA-256: d01c2a5f22168e376fae8eb749dddb8d8e265a93dc76fe39d0d21a861d9e1d0f
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a significant number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The presence of embedded URLs and the PDF structure itself point towards an attempt to redirect users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://trafffi.ru/strik?utm_term=golden+star+movie+theater+austintown+ohio PDF link annotation
    • https://xitukuwelup.weebly.com/uploads/1/3/4/3/134340625/acba796e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416151/normal_5fb9f4fbbb7e9.pdfIn PDF document text
    • https://cdn.sqhk.co/kawaxixe/SsVdoX6/kung_fu_panda_4_2020_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/kanereneb/hcLggrC/wifi_driver_update_mac.pdfIn PDF document text
    • https://numetoximo.weebly.com/uploads/1/3/4/7/134717633/gasebi.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/bilorezelilawu_kekepi_ruvazevi_tukiriz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501993/normal_5fd08e2514899.pdfIn PDF document text
    • https://nofakuxuwuxow.weebly.com/uploads/1/3/4/6/134684799/bopukigorubaru_zovobinepa_borupivalu_supagopisesaxi.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lukuxaluk.pdfIn PDF document text
    • https://rajufunes.weebly.com/uploads/1/3/4/7/134760411/rakijoxizafo_vatiseraza_nafiwaxe_pokopu.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://uploads.strikinglycdn.com/files/7f84a635-e7fc-43c6-bc46-9753f7c2161d/https_apps_evozi_apk_downloader.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/countable_and_uncountable_nouns_worksheet_grade_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/196e4c42-4271-4b49-9083-a6d0cd963047/39853482362.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3db583c4-d506-4942-83f1-951bc94604d4/85373107415.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b87044d-1f3e-4c4e-a668-e2dc860e364a/uber_driver_test.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE477 5132 bytes
SHA-256: 706eb5101b2557020340d821756a7bda89c4ddae800950e8c8261744477b13ae
font_01_sfnt_off0000f5cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5CC 11996 bytes
SHA-256: 9cc03363a5ad0ef72412bacce0e430c7b1d14c02aea3008c868e8665ad1a16ac
font_02_sfnt_off00011e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E1E 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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