Malicious PDF — malware analysis report

Static analysis result for SHA-256 f26743716d9fbecd…

MALICIOUS

PDF

76.8 KB Created: 2021-04-03 17:58:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 4c09360ff4001b3985d689d0ab7dd000 SHA-1: 6f5222f5a7b2db00e95d39f86a9564bed7c96819 SHA-256: f26743716d9fbecdee8ec7a56d16c6fb48cb3b119174674ac6174b0cce15b0b5
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, suggesting it is part of a link farm designed to direct users to potentially harmful websites. The primary malicious URL identified is https://xezojetit.ru/strik, which is likely used for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://xezojetit.ru/strik?utm_term=toshiba+satellite+l755+battery+price+in+pakistan PDF link annotation
    • https://cdn.sqhk.co/letojeka/F05WPja/8512536975.pdfIn PDF document text
    • http://namabal.scienceontheweb.net/faduniw.pdfIn PDF document text
    • http://kunozoxutokusu.mygamesonline.org/euro_truck_simulator_2_activation_key_images_download.pdfIn PDF document text
    • http://vitonidero.medianewsonline.com/56784659842.pdfIn PDF document text
    • https://cdn.sqhk.co/supesuvepo/cvGvjiF/bouncing_balls_game_free_download_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/ludozenidi/d8Sicjf/chocolate_cake_cooking.pdfIn PDF document text
    • https://cdn.sqhk.co/zalivelo/viagidj/fakosete.pdfIn PDF document text
    • https://cdn.sqhk.co/tekunipifob/lhaib9G/puvafosubapureboli.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d0a6b1b1-1773-4622-8b5e-0ab5990a7ed3.filesusr.com/ugd/b90ba1_9e4cca1033cd4f6a9147a73b31d09cf1.pdf?index=trueIn PDF document text
    • https://7e62deb9-9b1a-4e2d-8b60-9a8f762ee201.filesusr.com/ugd/1f553f_437e141f42074a6e9155ab233af20a6a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/bengali_tv_serial_video.pdfIn PDF document text
    • https://6552665f-f3ce-4070-9f47-7b493df4570a.filesusr.com/ugd/3d88c7_e0c2b79e1f4547aa916f3afd91a219c7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/35872409584.pdfIn PDF document text
    • https://8f0c9b82-9570-4081-bbb7-5e23a534ea09.filesusr.com/ugd/7008f3_e29aeff1f53940c099d4745d8457cb76.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kavalukato/fz_25_price_in_nepal_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/afnor_formation_iso_31000.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/reading_activities_for_esl_students.pdfIn PDF document text
    • https://5405d108-7f1e-482b-a10c-e06f62b7505d.filesusr.com/ugd/d941b1_d8fe0583d76749f2850b95fd6a87df15.pdf?index=trueIn PDF document text
    • https://e5eb5b25-b33c-43e3-82d5-57ab1bf863d8.filesusr.com/ugd/b0c717_841afad88af34c1f88c07e7810301cec.pdf?index=trueIn PDF document text
    • https://fd7a53fe-11c1-4e60-83ad-ac1bb997268f.filesusr.com/ugd/5cf23b_34f31e84142a490aafd379c0918fa5dd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/sat_practice_test_1_scores.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/anaganaga_oka_ooru_violin_ringtone.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_off0000ebb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB8 5480 bytes
SHA-256: 461a107c0de57de9f8b666156cc06743a5921241f7485a18923e61ec375bc157
font_01_sfnt_off0000fe64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE64 11292 bytes
SHA-256: 401dcf13df9f60611c2563cc541db31a29ddde1838cf3d33b7f8ac41ce5604ef

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