Malicious PDF — malware analysis report

Static analysis result for SHA-256 613a383777c138f2…

MALICIOUS

PDF

79.6 KB Created: 2021-05-24 07:35:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 817331e13933c6254e9bda5420d52cd3 SHA-1: d5598201991779e7036d7dbc3dc6800000adae40 SHA-256: 613a383777c138f20d7ff92d8170e53809d89ab585dd9769e5266c7d271e9e2c
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL pointing to 'seumenha.ru'. This heuristic, combined with ClamAV detection and ML classification, strongly suggests malicious intent. The document body, though partially corrupted, indicates a lure related to a book summary, likely to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/strik?utm_term=libro+la+tejedora+de+la+muerte+resumen PDF link annotation
    • https://tezigawoje.weebly.com/uploads/1/3/1/3/131379443/wipajupesor-fononigal.pdfIn PDF document text
    • https://filokizufotol.weebly.com/uploads/1/3/4/4/134455434/a7b41337e9b7a.pdfIn PDF document text
    • https://kenitavujene.weebly.com/uploads/1/3/5/9/135977886/5545477.pdfIn PDF document text
    • https://balesiloruj.weebly.com/uploads/1/3/4/6/134671801/3945751d.pdfIn PDF document text
    • https://tunuwadubozowe.weebly.com/uploads/1/3/4/3/134363043/wokowedupuposir_jevudi_tetap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/82cbe8e8-c346-4b82-b2d6-ef4ee6cca81d/17787502408.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/konalolefisoxafimorek.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/cow_dairy_farming_project_report_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee504477-3f41-4f5f-b6f0-61e2e536e746/best_place_to_donate_childrens_clothes_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/lusegokaves/front_page_design_for_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/computer_hardware_course_syllabus.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/xanil.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/peminujuturama.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/pioneer_avh-200ex_wont_turn_on.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/42744539516.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/32748078458.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/what_is_the_difference_between_flight_of_ideas_and_loose_associations.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/futos.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/to_kill_a_mockingbird_chapter_5_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/zokuwimezafafakuna.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/ugly_drum_smoker_plans.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/fate_grand_order_heracles_guide.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_off0000f814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF814 5128 bytes
SHA-256: b77b8698102ff8d3931703bc9989870eafec817c8541b6862a8420d5260f9e2e
font_01_sfnt_off0001096c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1096C 12388 bytes
SHA-256: eb805c699b055b570b272a5468e48bc4cf98413af94d09087656645306b95eed

Open this report in the interactive analyzer, or submit your own file for analysis.