Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbabbfb568735cee…

MALICIOUS

PDF

77.1 KB Created: 2021-03-15 09:13:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: d989403839d1ad12851a6a5a63371e61 SHA-1: 1196d78df639829d8c455fcd969885a625d9a138 SHA-256: cbabbfb568735cee67caa786d7d5caf033611edc9766e678a7843a6ef4b6bd20
156 Risk Score

Malware Insights

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

The PDF contains a high number of external links, with one pointing to a suspicious domain ('dugedepap.ru') that is likely used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and heuristics suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://dugedepap.ru/strik?utm_term=how+to+use+wordpress+elementor PDF link annotation
    • http://lobabinuladeri.medianewsonline.com/lg_air_conditioner_error_code_ch_10.pdfIn PDF document text
    • http://mebevevi.mywebcommunity.org/dizulepozotadam.pdfIn PDF document text
    • https://xunujilitaga.weebly.com/uploads/1/3/5/3/135315779/daxamizatowopenuju.pdfIn PDF document text
    • https://kumajevebak.weebly.com/uploads/1/3/1/8/131856027/danuzisoj_kowixasuwe.pdfIn PDF document text
    • https://funotagikaxu.weebly.com/uploads/1/3/1/8/131857914/xipolamemipapevej.pdfIn PDF document text
    • https://kokonasaza.weebly.com/uploads/1/3/1/6/131636703/cbb92.pdfIn PDF document text
    • http://fukerijinexin.mygamesonline.org/scala_rider_g9_replacement_parts.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/vososasoxumete/us_eia_weekly_natural_gas_storage_report.pdfIn PDF document text
    • https://c63ca81c-6df4-4ec3-bc2e-8508f29a6879.filesusr.com/ugd/d48fe3_eebcfdfb84cd4949ab6b8a9dabc40163.pdf?index=trueIn PDF document text
    • https://f815f12b-539f-4060-8ed9-abd2caada31b.filesusr.com/ugd/ceb2e8_53c7c92684c2404995dc33130b81d3d5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/xifevuzevaguzulijube.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/borg_warner_velvet_drive_repair_manual.pdfIn PDF document text
    • http://zisukuvi.atwebpages.com/21450311248.pdfIn PDF document text
    • https://50bf384a-eeac-4f26-a262-e2ba1a5e00ba.filesusr.com/ugd/17159d_3138833a183247c9a0c3517e9d52b5ed.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/megulu/73892785837.pdfIn PDF document text
    • http://vizomonuzujo.onlinewebshop.net/77066399872.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/human_resources_assistant_cover_letter_template.pdfIn PDF document text
    • http://xobibaga.myartsonline.com/brain_teasers_pictures.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/30131780846.pdfIn PDF document text
    • http://xomutojekes.myartsonline.com/learn_data_structures_and_algorithms_with_golang.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/manugijubexebubeta.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/windows_10_enterprise_permanent_activator.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/music_collection_database_template.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_off0000f182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF182 4948 bytes
SHA-256: 14fda7ca20c1d1c240dc736d1f8de99426314219671adf35979a89954b161788
font_01_sfnt_off0001024f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1024F 10864 bytes
SHA-256: 2d6141d42b6df586cc0bb138e448624b552f9ca5c98ef72cc44d8fb9d7301745

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