Malicious PDF — malware analysis report

Static analysis result for SHA-256 e10c5ea42341bf63…

MALICIOUS

PDF

76.0 KB Created: 2021-04-27 01:56:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: a7f9091b1afbb1bb36c721bde4c6b33d SHA-1: 27b9249414efa6a9a737bba8f7dbfa89dbfe7fd8 SHA-256: e10c5ea42341bf63ade9e1ed0db01bb7e99ddf20ccb382f3cad8d510eb10d0fc
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with one specifically identified as a potential phishing lure related to driver's license renewal. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the presence of external URIs and the PDF structure suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/strik?utm_term=bmv+what+do+i+need+to+renew+my+license PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454306/normal_6035bd681ade0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485161/normal_6042dd4b7d68e.pdfIn PDF document text
    • http://zanapipok.getenjoyment.net/english_grammar_for_class_8.pdfIn PDF document text
    • http://dream-stat.ru/vomawefatuwo1d0q.pdfIn PDF document text
    • http://todayshop.website/kadebidutotogudrkokv.pdfIn PDF document text
    • http://mukinumatonewo.getenjoyment.net/nodujanudafuzuve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501501/normal_60586baf1e4a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379029/normal_6011ddda62c9c.pdfIn PDF document text
    • http://idealica-tufficiale.website/munifevowv7vce.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1df32be7-5e6a-491e-80e4-5c558052ef26.filesusr.com/ugd/e02e08_7e616e47433b4592bfab95b80215d484.pdf?index=trueIn PDF document text
    • https://1c684d3d-b1aa-4d58-8f8e-408f9cf37fac.filesusr.com/ugd/64d889_4e9aa90836e7410eaf7aa899120db46b.pdf?index=trueIn PDF document text
    • https://e25b7b56-d8f7-44cb-9276-56428e53d1cc.filesusr.com/ugd/63f3e8_adf3d3fc528f4102b70f9861ee94cd09.pdf?index=trueIn PDF document text
    • https://52aa71f3-9574-4e96-898b-bb16aa893b2c.filesusr.com/ugd/b13a71_04348c4f72524da2b6d64066b709ede2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f069920d-8bc7-4284-91a7-dba84d154156/why_does_a_dryer_not_start.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/434a1bb0-7bcb-42d3-b15d-475835e7bfa6/8827049301.pdfIn PDF document text
    • http://jalijoruki.atwebpages.com/64453785626.pdfIn PDF document text
    • https://be9ca920-c372-4566-b00d-544f92814f3b.filesusr.com/ugd/f0c5a9_4091e64928b54aaeb97c7e34745aab2b.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_off0000e989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE989 5480 bytes
SHA-256: 6a8b46499b2bebfb2a6490f583461a9b8244410659c7bed0fb79f8b3e146f38d
font_01_sfnt_off0000fc18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC18 10728 bytes
SHA-256: a73359751ef17a87b9ea43ad57668c7ef86b90771b84c051397aad8e075b8126

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