Malicious PDF — malware analysis report

Static analysis result for SHA-256 d01973eabe33266b…

MALICIOUS

PDF

86.1 KB Created: 2021-03-19 13:59:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 8bf923cdeb991548bbad1829ef3564b9 SHA-1: c667841d659f36ab112920f3b38594d6346e9340 SHA-256: d01973eabe33266bf3d52bb40954682b555b5bd45540d8036cb923d53114726c
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing attempt. It contains an embedded external URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the presence of embedded URLs and the phishing detection suggest the document's primary purpose is to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/123?utm_term=cfp+certification+exam+practice+question+workbook+pdf PDF link annotation
    • http://pozijuza.scienceontheweb.net/9923994159.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454043/normal_603a2d6d11d53.pdfIn PDF document text
    • http://ketotreno.buzz/how_to_use_sony_rx100_vii_as_webcam231a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385613/normal_5fdd7464ee9e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415543/normal_5fdf7206befaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489028/normal_60247122065a9.pdfIn PDF document text
    • http://negedibomul.sportsontheweb.net/warehouse_management_books.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423154/normal_60004a6db7e65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366956/normal_6004b15c73a7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452389/normal_600b469b11d0b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472764/normal_5ff49cc1005df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387229/normal_6048a6135fce6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370768/normal_5fff360a58f19.pdfIn PDF document text
    • http://qqkaxes.xyz/fellowes_jupiter_125_laminator_jam68utc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wisuw/walefukipe.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/capital_expenditure_budget.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_off0001108a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1108A 5664 bytes
SHA-256: 8f0892f9d5e4b2ab2b33af7e99301141df1a6ae1c86f355c471e1d337c0a98f4
font_01_sfnt_off000123cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123CC 11688 bytes
SHA-256: 0c8b5c55f52c9e65a6892432c728272c95493ff72a425af5baabf1fb0dc8a55f

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