Malicious PDF — malware analysis report

Static analysis result for SHA-256 49d67908a942a458…

MALICIOUS

PDF

239.6 KB Created: 2021-03-13 12:54:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 831df7c42286250ede4f67586667aa56 SHA-1: 59856891f45ab549e874f8bb40390b1aae87583f SHA-256: 49d67908a942a4580e99da36863b0d01273db9b49779e842ab42c4e9ee80bfd6
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of numerous embedded URLs, including one pointing to 'maypoin.ru', suggests the document is designed to redirect users to potentially harmful websites. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://maypoin.ru/wb?keyword=paradise%20lost%20modern%20english%20book%205 PDF link annotation
    • http://topcreditreport.info/is_salad_high_in_carbsw63h9.pdfIn PDF document text
    • http://meriline.store/28694379467hcdhi.pdfIn PDF document text
    • http://hookup666.site/94845723434d2spg.pdfIn PDF document text
    • https://fadefufogu.weebly.com/uploads/1/3/5/9/135960472/rogazi_bedopolokajax_fabojugemasuw.pdfIn PDF document text
    • https://vabudefun.weebly.com/uploads/1/3/0/7/130775589/1a5df70978.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369653/normal_600cdee1c176b.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/5Zhieih/74241149346.pdfIn PDF document text
    • https://dupazenulejafu.weebly.com/uploads/1/3/4/3/134331878/ae6a31074a2d.pdfIn PDF document text
    • https://cdn.sqhk.co/gukokefa/jjahf3k/segazawokoluk.pdfIn PDF document text
    • https://cdn.sqhk.co/fejavegiwo/gjijhcY/64806064915.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411686/normal_5fde68753a30e.pdfIn PDF document text
    • https://cdn.sqhk.co/fefowofuk/ehj6kQA/among_us_notes_tool.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380403/normal_603759864d9c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495059/normal_6009f46b0e106.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500001/normal_5fe973adb42b8.pdfIn PDF document text
    • https://cdn.sqhk.co/jomutepe/ffjahhR/womafuxid.pdfIn PDF document text
    • https://tudisapa.weebly.com/uploads/1/3/4/6/134660317/lizefokezopil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468820/normal_5ff89a8483987.pdfIn PDF document text
    • https://cdn.sqhk.co/gukokefa/gjX9pid/85328178009.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00037698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37698 5568 bytes
SHA-256: d16b4debd9b6bc0bccdf0f7823d91d41508e9ed1ffe689395a689a1a2dc7fc47
font_01_sfnt_off00038959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38959 11072 bytes
SHA-256: d79593e09cfd531d3722f262ef8b9a4000d5d9b4b7e391d2dc2ef17904797ba0

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