Malicious PDF — malware analysis report

Static analysis result for SHA-256 24e3e17eb222a6a2…

MALICIOUS

PDF

73.4 KB Created: 2021-05-26 15:46:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: ccb9fa275d8a9eb0dfc52108bf16973e SHA-1: 51d4e70969633cbec5d865b91fc449ea8e3a4932 SHA-256: 24e3e17eb222a6a2cd0da83cfa3a8995a259f00bb91e5c4a5bec24c85126df69
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to SEO-optimized PDF documents, suggesting a link farm or phishing operation. One prominent URL, https://seumenha.ru/strik?utm_term=royal+canin+small+puppy+dry+dog+food+feeding+guide, is likely the primary destination for the phishing attempt. The presence of PDF_SEO_LINK_FARM and PDF_URI heuristics, along with ClamAV detection, strongly indicates malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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/strik?utm_term=royal+canin+small+puppy+dry+dog+food+feeding+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422890/normal_5fe8de8374aed.pdfIn PDF document text
    • https://towizitubozabo.weebly.com/uploads/1/3/5/4/135400713/042f6.pdfIn PDF document text
    • https://pigiwikabulate.weebly.com/uploads/1/3/1/8/131856715/ace86be7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469128/normal_6025c0ca60e0e.pdfIn PDF document text
    • https://vizodifoberesin.weebly.com/uploads/1/3/4/9/134900429/rekoku_jibom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4528959/normal_5ffd603a3b4e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401555/normal_6015b2af14660.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406793/normal_6036587c9da53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368505/normal_604ab7695dd7e.pdfIn PDF document text
    • https://lamipakowoj.weebly.com/uploads/1/3/2/8/132814468/3931482.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/512bd01c-d408-4b74-bf5e-64458d683308/tugazopolafozififexugob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86c8cd5d-69ff-4c19-90dc-4b8d4e6b37bb/pikeminovukaxed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9832ea70-21f0-449d-86bc-e01b7d88a1d6/coleman_propane_grill_roadtrip_lxe_portable_gas_grill_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec58f1ec-6361-40d2-9d84-2779ebee4623/47381782153.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a73ed8c4-1296-4b22-95c8-864d56535eec/financial_ratio_analysis_report_template_xls.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f5d920f-8822-498b-adaa-4b2d92be020e/vosafibitivikuvezabisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d0285a9-5ace-403b-a3df-879f38f7612e/1957509043.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b64d3840-9fea-483f-9433-22470aad342e/ditufapaniponogoxodino.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb46dbe9-ee77-46f0-b33e-6e379d69dc90/speed_distance_time_worksheet_ks3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/975b65e6-3ce0-4f7d-8d7b-fae56d33881d/how_to_pair_nakamichi_bluetooth_speaker.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_off0000e083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE083 5584 bytes
SHA-256: 01b4b6b92fd77745e77967d0c51c0ff4913de1960147fa9cde57c8b2948977c5
font_01_sfnt_off0000f383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF383 10780 bytes
SHA-256: 9279a6cca27f2a6d1797b0a2cfb86de51f25196ef466c20b73705eca573f1485

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