Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d8250e6bd8e38fa…

MALICIOUS

PDF

74.5 KB Created: 2021-03-03 17:36:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: cc6e9ba09c99c53c99414fc4d96c573a SHA-1: 9d3b79e0f8a0c5428a178b720fffe91699d20533 SHA-256: 3d8250e6bd8e38fa6b3260428b958053370d6ec7bf3d9a05fbe585e1b24beb63
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for link farms and phishing sites. The document body mimics a search query, suggesting a lure to a malicious website. ClamAV and ML classifiers strongly indicate malicious intent, specifically phishing and trojan activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/strik?utm_term=is+my+south+carolina+driver%2527s+license+suspended PDF link annotation
    • https://kufojomarolov.weebly.com/uploads/1/3/4/4/134401526/tonalotipev_susakitiput.pdfIn PDF document text
    • https://rigopijifotifat.weebly.com/uploads/1/3/2/6/132695828/7582541.pdfIn PDF document text
    • https://kuvixirizu.weebly.com/uploads/1/3/0/7/130739951/duguruxenaxuleveg.pdfIn PDF document text
    • https://latewumopinigan.weebly.com/uploads/1/3/4/3/134313498/zumodawogemolejorusa.pdfIn PDF document text
    • https://cdn.sqhk.co/pawexedibib/diiidJT/7_days_survival_forest_apk_free_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://desejole.myartsonline.com/27647446829.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/aristocats_scales_and_arpeggios.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/project_cars_2_racing_games.pdfIn PDF document text
    • http://kopolug.myartsonline.com/fabuduwabuzokefokokanarag.pdfIn PDF document text
    • http://segimoto.myartsonline.com/40115220699.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/how_to_change_clock_on_samsung_microwave.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/iso_27001_stage_1_audit_report.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/fortnitemares_challenges_part_1_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/xekenajevep.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/zusejovosinojimikuditefaf.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/vba_application._worksheetfunction._vlookup.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/72510222368.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_off0000e5f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F2 5448 bytes
SHA-256: 9613a08e505ea24329872a1fe998cbc74409dfa172743c3d796e36a7fc1dfebc
font_01_sfnt_off0000f860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF860 10448 bytes
SHA-256: 298b8ca3fab3cf9d2313ef2a333574ed087916ece8e72295e4ece20aa8034790

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