Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d45a749cdce4043…

MALICIOUS

PDF

69.2 KB Created: 2021-02-24 06:57:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b11b29ec052aea4235c6c868a6255720 SHA-1: 32dd7a89015e4cc9f3bc9b69a2045e27db1bbef5 SHA-256: 4d45a749cdce4043cb154a87e018a122e9cd5c2078a84fac9e63b6b8fda9990f
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL that, when clicked, likely leads to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to search terms, suggesting a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/strik?utm_term=lawn+mower+repair+parts+near+me PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4413980/normal_5febff531ca32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380545/normal_603259d957c56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366028/normal_60146daa44367.pdfIn PDF document text
    • http://vesimawamom.66ghz.com/aaromale_ponthoovale_video_song.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389793/normal_5fcacaf50d3fb.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/nojemi/46961582610.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/varices_esofagicas_tratamiento_nutricional.pdfIn PDF document text
    • http://vimukomexetad.rf.gd/besuvisow.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/zofarova.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/62420050674.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/openoffice_calc_receipt_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/jonekusopaf.pdfIn PDF document text
    • http://bazitobabin.epizy.com/71069883546.pdfIn PDF document text
    • http://zuzowizezob.rf.gd/savage_worlds_rippers_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/18835552459.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_off0000d3c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C4 4968 bytes
SHA-256: 88be2fea0f886a3e699997c311637f59150243de7f97b8635c5f31e658f54be0
font_01_sfnt_off0000e4a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A7 10248 bytes
SHA-256: f2010e751a8056afab31dfc5f489f3c3fe6fc9c04752bdcb149718c0f2cf20fc