Malicious PDF — malware analysis report

Static analysis result for SHA-256 09286190baae4bd1…

MALICIOUS

PDF

80.1 KB Created: 2021-03-12 17:19:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 0e6f057c63a370d8977e4f3b6adc1c26 SHA-1: 2f5f784ddc984dbefd6edb27b52ddaccc78a5f25 SHA-256: 09286190baae4bd104b19e57db96e16aaa0f54608997165b89173e2a2b244893
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. Several of these links point to unknown or potentially malicious domains, suggesting an attempt to redirect users to harmful content or phishing sites. 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://leonvi.ru/strik?utm_term=how+to+become+a+good+fingerstyle+guitarist PDF link annotation
    • http://you-bestshop.xyz/84233066006ncdme.pdfIn PDF document text
    • http://xafopawiki.medianewsonline.com/fufepujapedupibufewebo.pdfIn PDF document text
    • http://kmplitka.shop/81592736919hamyv.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxofidipo/7ibhfgi/microban_24_hour_multi-_purpose_cleaner_amazon.pdfIn PDF document text
    • https://cdn.sqhk.co/ranofakon/giNjjgf/stumble_inn_londonderry_nh.pdfIn PDF document text
    • http://makamar.tech/medical_fitness_certificate_form_for_job0co4h.pdfIn PDF document text
    • https://cdn.sqhk.co/gojinuma/yghltih/16336737886.pdfIn PDF document text
    • http://free-at.pro/unidad_3_leccion_2_test_answer_key77h0t.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/titugome/4300433635.pdfIn PDF document text
    • https://f6ea5e03-7e7c-4dce-82ee-fd5d223759ef.filesusr.com/ugd/d203ad_fe162faad0ea461e97525928ba4c271e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pujirageg/bubble_trouble_2_pc_game_free.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/lipipuvegito.pdfIn PDF document text
    • http://rowoniwetob.atwebpages.com/alesis_qs8_factory_reset.pdfIn PDF document text
    • https://c38d9960-f3a4-46a0-b266-cfc7836dd0ed.filesusr.com/ugd/a8d9c8_0bd46ee94805479e8d147f1c638da88d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/67934804871.pdfIn PDF document text
    • https://01d67eed-50ba-4ccb-8f82-c1581f7ed07e.filesusr.com/ugd/e3325f_8b4611c41f3543758fce2a92d31757ba.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sedowedi/behringer_x2222_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/sapujemekutikawomafan.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/41822322502.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_off0000fb87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB87 5636 bytes
SHA-256: 9e9f30b224487c67ed5c3747c8225d215ad5644d05447e40aee68ab9861ac912
font_01_sfnt_off00010eb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EB1 10576 bytes
SHA-256: dae31d7b82934d9058b568baf9d7e6874705aeaf40b537768482b5b5a27f33ac

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