Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c12eaaa050acfde…

MALICIOUS

PDF

81.4 KB Created: 2021-05-25 12:25:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0fcd76d4fc0670eb4eb4d1b62c4d45d1 SHA-1: 810529b8cd162e52a10d8fdf22362736204e23a4 SHA-256: 9c12eaaa050acfde59cf1bf6340a8942d19c9e2e01aadbd93bf176c93d3d135d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://soxebez.ru/strik?utm_term=el+dorado+county+sheriff+case+search PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378605/normal_6011dabb44fde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420766/normal_5fe671ea7365f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413240/normal_6005e62ab25e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425759/normal_604e39c5daaf6.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/4d03dbe0-bb6e-4dea-a3e5-56939b895809/34418103138.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/cameroon_visa_application_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8309efd-c448-4fa3-aeb3-bb390e20690c/munezunadusosomanoka.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/voridusozoparulogi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b1a0d5b-c685-41a0-b458-5fa86c840620/meruwuvi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71cc47f3-6bb7-4308-b146-fc7f34d72bfc/71720853735.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/practice_simple_present_tense.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/026ea9ef-c86b-49ff-aee6-3b9042beca95/gekadedegaximemaji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecde3dd9-dd88-4d78-bdc0-5326a3d566e9/76752618997.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/517d9bef-8c74-4b16-9450-702d8a092fdc/97582736997.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/tetobus.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/nojagomiximova.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_off000100fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100FC 5168 bytes
SHA-256: 55bbdd0b8c4138cd590eb5b0d2d6758fc3b523fac7f471a117179c2f09100c87
font_01_sfnt_off00011294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11294 11488 bytes
SHA-256: 273c203e6d9345cdd6d77a681f03a13eab0523b2953293109f2101f8f325bb20

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