Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e9140b9c5684558…

MALICIOUS

PDF

78.5 KB Created: 2021-02-23 12:57:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 5bb6d357b9fe1563226403e3d2d12748 SHA-1: b2518f6c473444e7e99e8d81db6a0a99b6ac72b7 SHA-256: 0e9140b9c5684558803f24fb649a8fbe2072b5f6940a1732c49533e28cd2fe6f
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains and configured as a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=jump+rope+dudes+apparel PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4469831/normal_6027fc3380e0a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372086/normal_6000ccafdc08c.pdfIn PDF document text
    • https://cdn.sqhk.co/daxegajok/bY5XOig/the_societal_marketing_concept_quizlet.pdfIn PDF document text
    • https://cdn.sqhk.co/nitagalut/hahi2ha/fafixisukegav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476947/normal_5fcf826b02800.pdfIn PDF document text
    • https://cdn.sqhk.co/kobadaxo/FjbwWhf/perusu.pdfIn PDF document text
    • https://cdn.sqhk.co/toxodimina/hhp0gK3/disco_zoo_unlimited_coins.pdfIn PDF document text
    • https://cdn.sqhk.co/busibelifiv/JhcicvV/wellness_coach_meaning_in_marathi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482190/normal_5fd3dc0ebb260.pdfIn PDF document text
    • http://boviriso.22web.org/free_archicad_tutorials_for_beginners.pdfIn PDF document text
    • https://cdn.sqhk.co/jategumeb/Tjddsvg/48249520863.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://sekevidijonuji.rf.gd/38924416071.pdfIn PDF document text
    • http://nalujisutu.epizy.com/delf_a2_sample_papers_with_answers.pdfIn PDF document text
    • http://xijovapafibowuw.rf.gd/jozodi.pdfIn PDF document text
    • http://sixijoras.epizy.com/tiwomapilozixopoteva.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/tiramab.pdfIn PDF document text
    • http://bavidoripo.epizy.com/48538038904.pdfIn PDF document text
    • http://nabesazuxipuf.epizy.com/dikenirisopijolamidoleme.pdfIn PDF document text
    • http://bexudigibop.rf.gd/76555715944.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6CB 4740 bytes
SHA-256: 1d9da5172f7787d60a32e4ed8e324bd02e5cedf2d00d4575c827e7719f5f12a3
font_01_sfnt_off0000e6d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D5 3360 bytes
SHA-256: 9533dd280bad553c64d6607a82e5b62b688068042da9a2e90f740b5b1a35bd1a
font_02_sfnt_off0000f4d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D6 11828 bytes
SHA-256: 158fa1dfed9315960591a691fce542603ed018803022fbc0927781819fdafbfc
font_03_sfnt_off00011c96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C96 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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