Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b95f2c95c3b67e1…

MALICIOUS

PDF

71.0 KB Created: 2020-12-17 00:18:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: d3e73ccd182d72726280e719c289e75b SHA-1: b24875350bfa511371671e25bb86ba4b0fbe9cbf SHA-256: 6b95f2c95c3b67e146d84e8141fa80c43353361874716feffa1319218bd2b915
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are to PDFs with numeric slugs, suggesting a link farm for SEO manipulation. One of the primary external links, 'https://trafficel.ru/strik?utm_term=synonym+for+gave+way', is suspicious and likely leads to a phishing or malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/strik?utm_term=synonym+for+gave+way PDF link annotation
    • https://zotikukubufo.weebly.com/uploads/1/3/4/7/134773644/zamefupalajevozogowa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369777/normal_5f9586708e527.pdfIn PDF document text
    • https://wikabolodaj.weebly.com/uploads/1/3/4/6/134648749/xureruk_genogaboxi_tenujuxujiwi.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
    • https://static1.squarespace.com/static/5fce30d5169f3e188a7bcaef/t/5fd6c9e3267c8d0ace56acf4/1607911907428/62730525173.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc586961c8c741314515584/t/5fcee6e8509e863c68225b48/1607395048687/bajemate.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/nesupibaxa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc19cf9bdb33045eec75325/t/5fd00074a21aaa12ce8a445c/1607467125635/pakesobexakepesovijekiso.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe776ceaf37e3b646ee27d/1606317941319/31994384985.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0be4612facd59ceac2d5b/t/5fc11965eaf37e3b64c2e022/1606490471637/49456087718.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ca7740f1034a5ca83b63/t/5fc431bccb3e0f5771d4b3ab/1606693314504/59789895106.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c362403f5353fd950a5e/t/5fc85d54ec83506b0477f94a/1606966612954/latigo_romano_tortura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c642b7c3-8d2a-4969-ab3b-dbd6f7643d01/raksha_jungle_book_pronunciation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c94a0580-8b56-4c86-9d02-830231a06dee/propiedades_del_suelo_quimicas.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4ca47ab79f442f24277df/t/5fc868e26652ad59ec28326b/1606969575913/sewagoripaxe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcea2aa2490e90251a3a875/t/5fd66e85481cfa31adc99db8/1607888520983/dauntless_trophy_guide_ps4.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b538feeefa0c0b63a799/t/5fd6e549e5ac582896357858/1607918930823/hepa_filter_air_purifier_consumer_reports.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE61 4896 bytes
SHA-256: 4b9ad53df710333c6ded0f15d678be808a1612ef8a1afefa2d358630404f7954
font_01_sfnt_off0000deeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEEB 9884 bytes
SHA-256: e6c14675f07484e004f13896e715b19bcb54db23c07a927482feb6222576358d
font_02_sfnt_off000100a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A6 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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