Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d420befb214bf4d…

MALICIOUS

PDF

81.8 KB Created: 2021-03-24 23:53:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 182610f09bb6165a7374a50870a40fa9 SHA-1: 76b96bf476766e011d1cde5b485da8529438e0e1 SHA-256: 4d420befb214bf4dc5ea28914b340d5f92168ed8e5dd28c6db628d320ab707f1
96 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, one of which is directly referenced in the document's metadata and body text, suggesting a lure to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the presence of numerous external URLs points to a common phishing or credential harvesting attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/strik?utm_term=bissell+big+green+deep+cleaning+machine+carpet+cleaner+86t3+manual
    • http://chempion.coffee/dinobijorukisunof8j5jx.pdf
    • https://diboboxu.weebly.com/uploads/1/3/4/3/134330346/ee8d99ea249.pdf
    • https://cdn-cms.f-static.net/uploads/4366331/normal_604a5c97a33f0.pdf
    • http://dominis.xyz/64847505987c1bvj.pdf
    • http://mukinumatonewo.getenjoyment.net/what_is_applied_statistics_for_psychology.pdf
    • https://cdn-cms.f-static.net/uploads/4477386/normal_600c83b55f8da.pdf
    • https://zokaduxenatased.weebly.com/uploads/1/3/1/6/131637020/zexoxumodutuxazuvolu.pdf
    • https://ranitezal.weebly.com/uploads/1/3/1/4/131438109/bulenowofofugag_xogonufipu_jagovelufuxon.pdf
    • https://cdn-cms.f-static.net/uploads/4382790/normal_6017c2dca2a04.pdf
    • https://static.s123-cdn-static.com/uploads/4479222/normal_5ffaa162ded42.pdf
    • https://sazotavivi.weebly.com/uploads/1/3/1/1/131164406/b7136.pdf
    • https://disumudumoronu.weebly.com/uploads/1/3/1/4/131408153/fuwuj.pdf
    • https://cdn-cms.f-static.net/uploads/4404733/normal_605b6f877139f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/019f29ce-f6de-4ba7-8835-464c1d1d5843/25122015869.pdf
    • http://lojabupabavize.onlinewebshop.net/496447693.pdf
    • http://newubopuga.epizy.com/chandigarh_police_online_ddr_form.pdf
    • http://bigamutalunu.atwebpages.com/hibboo_afaan_oromoo.pdf
    • https://uploads.strikinglycdn.com/files/cbf1bd0d-b155-4130-a93b-0da8d2ef6202/salter_kitchen_scales_1021_manual.pdf
    • http://sakigekoxigukil.epizy.com/82377957898.pdf
    • http://puribisipup.atwebpages.com/automation_engineering_technology.pdf
    • http://xopozajuve.epizy.com/1999_dodge_dakota_repair_manual.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f134.bin
166ebba5bf7776143e5b358bbcf9e1003a39d085402dccf40b85a98c3f42e417		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF134 5960 bytes
font_01_sfnt_off0001052e.bin
750211ee182e3e4e42828cb976e71ca3a59f8b5cf23cdfa80910c2239344a151		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1052E 11040 bytes
font_02_sfnt_off00012afb.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12AFB 4324 bytes

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