Malicious PDF — malware analysis report

Static analysis result for SHA-256 092b090f5570c313…

MALICIOUS

PDF

75.5 KB Created: 2021-05-22 04:48:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 92f118803b5f16979bd8d65a9ff3c32f SHA-1: 2eb9f541ed6745f562e12516eeb78fb2c7efd4de SHA-256: 092b090f5570c3139d483c6b6a80aec684d37995a226bd4149527404eac57ee9
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified as a link farm, and is flagged by ClamAV as Pdf.Phishing.Trojan. The primary URL, 'https://ponafet.ru/strik?utm_term=como+curar+la+balanitis+con+remedios+caseros', suggests a lure related to health remedies. The presence of embedded external links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

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://ponafet.ru/strik?utm_term=como+curar+la+balanitis+con+remedios+caseros PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4500001/normal_6029cd87347e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444875/normal_6051760b6bfdf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413843/normal_5fe459a362399.pdfIn PDF document text
    • https://rulovuwupe.weebly.com/uploads/1/3/5/3/135386045/mikixon_tanovi_vitakaribu_waresawe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427313/normal_603178434528c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445573/normal_6000ef8749eaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453902/normal_5fd7a0e37286a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405639/normal_605beaabc135c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450042/normal_604637281d714.pdfIn PDF document text
    • https://kewidanuratug.weebly.com/uploads/1/3/5/3/135323433/f28e63f8acf6f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481695/normal_5fe19e6f05b68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374198/normal_60183c0ad0e8b.pdfIn PDF document text
    • https://radinake.weebly.com/uploads/1/3/1/8/131856095/xezutej.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/ac00e09c-0c3c-4985-b664-a4cb1f50cc25/who_owns_project_management_institute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ea94aa0-caea-4ff9-bc6c-3d7d0f168543/how_to_use_mainstays_slimline_digital_scale.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/hotel_housekeeper_resume_template.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/vampire_diaries_season_8_episode_15.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b69fd232-9fd6-4302-bbad-a428e428d946/mfj_939_manual_deutsch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d8c6887-0672-4f13-a310-ef9ceefae705/79698146064.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa9b543c-ca07-44d4-bc25-683cbcc22aa5/lalis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d1ec38b-3983-4446-b982-ebb7fea18aa4/someone_like_you_adele_piano_letters.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_off0000e866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE866 5128 bytes
SHA-256: fcf70d7f41fbc18d3bc0daf2a88553296a28409f5d3ffa3d4787590d62a7f4a7
font_01_sfnt_off0000f9ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9AE 11416 bytes
SHA-256: 7103a14e01242b3ee1442b72d97fd7ce832489fdeabb72c6a6136a5454d385e1

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