Malicious PDF — malware analysis report

Static analysis result for SHA-256 296ab82e47e45f4f…

MALICIOUS

PDF

78.8 KB Created: 2021-05-12 12:03:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 210f685d19e260d1bf2990b7a8d36ecf SHA-1: 9092ec477fce3b816f487c3bff607336db71473a SHA-256: 296ab82e47e45f4f72dbe6fb6e7f37b2607f80b304531708475f222cd2da2899
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://midufefew.ru/strik?utm_term=whirlpool+ultimate+care+ii+washer+won%2527t+spin+or+agitate PDF link annotation
    • https://cdn.sqhk.co/dofewijoras/gdhcig6/talking_catfish_full_size.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/jgfwgi6/52285876909.pdfIn PDF document text
    • https://fefokivaz.weebly.com/uploads/1/3/0/7/130776727/f9663ea.pdfIn PDF document text
    • https://gesogakit.weebly.com/uploads/1/3/4/5/134581759/9163517.pdfIn PDF document text
    • https://sovawetozinunur.weebly.com/uploads/1/3/1/4/131407226/jitefuvo_dosuzafusoko.pdfIn PDF document text
    • https://pimuvetu.weebly.com/uploads/1/3/4/6/134635596/piwifigawunijapofi.pdfIn PDF document text
    • https://cdn.sqhk.co/kamepixuxuk/jhRqXhe/aldehyde_ketone_carboxylic_acid_ncert.pdfIn PDF document text
    • https://tonavibete.weebly.com/uploads/1/3/4/7/134748981/4403183.pdfIn PDF document text
    • https://xawavefite.weebly.com/uploads/1/3/4/6/134667803/d86e5545.pdfIn PDF document text
    • https://cdn.sqhk.co/vobevufubito/gc5cv1f/best_world_war_strategy_games_iphone.pdfIn PDF document text
    • https://jawuvufos.weebly.com/uploads/1/3/4/8/134856807/xavitenikoxurev.pdfIn PDF document text
    • https://cdn.sqhk.co/moxinivo/jXlBbih/sizuzizibofozipazegiveb.pdfIn PDF document text
    • https://pokifuduxorimib.weebly.com/uploads/1/3/4/5/134501468/8802105.pdfIn PDF document text
    • https://ravijirigiraga.weebly.com/uploads/1/3/4/6/134649302/pimozerif_wifutik_banuju_zebutofi.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/sesijesule/pedadurodekosigapeno.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/what_does_yellow_mean_personality.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/fleece_sheets_double_bed.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/tetavelidujo.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/lurimedolilexologukem.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/institute_of_medicine_medication_errors_report.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/alex_rider_point_blanc_chapter_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/kibiludukazeti.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/xoverurewutejokizagijut.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_off0000f67e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF67E 5484 bytes
SHA-256: 90504375edc315511d81a0ae6de7328be68341e680b371e1228d20a01d1c0a2e
font_01_sfnt_off00010916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10916 10488 bytes
SHA-256: 7b84ee209975302d5e1f68e825c04b0e47591992094c466ce61f70f098b25980

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