Malicious PDF — malware analysis report

Static analysis result for SHA-256 205eaedc8f4f8d1b…

MALICIOUS

PDF

82.2 KB Created: 2021-02-26 11:11:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: c312321ad8cf538ee4534b252d202c21 SHA-1: 720d61aafba9d659d028305fa8d6dddfaa6bdb02 SHA-256: 205eaedc8f4f8d1bb59841094bbf0881abaa5fc2d5bcfc61ef57871b48a536b8
126 Risk Score

Malware Insights

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

This PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to external sites, many of which are hosted on disposable domains and appear to be part of a link farm. The presence of these links suggests the primary purpose is to redirect users to malicious content or phishing pages.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://leonvi.ru/award?keyword=remstar+pro+m+series+replacement+parts PDF link annotation
    • https://xexidizufom.weebly.com/uploads/1/3/4/5/134508107/a1988d3b46.pdfIn PDF document text
    • https://nurowilalivep.weebly.com/uploads/1/3/1/3/131380447/9813683.pdfIn PDF document text
    • http://lovepositions.info/6353306016176vjy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475217/normal_600984098b1dc.pdfIn PDF document text
    • http://menbp.online/76996719867yw777.pdfIn PDF document text
    • http://copyright-helps-team.com/81282654323ne3ip.pdfIn PDF document text
    • http://xitabijasava.getenjoyment.net/electrical_engineering_salary_uk_2020.pdfIn PDF document text
    • http://begemotiks.fun/winaritixurasomedemifiziq5ltg.pdfIn PDF document text
    • https://gifenatewa.weebly.com/uploads/1/3/4/4/134480542/punowerovavov.pdfIn PDF document text
    • http://flymoney.net/49865149876ya1ve.pdfIn PDF document text
    • http://gelchlen.fun/quran_tafseer_commentary_in_english_audiomwp2z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505159/normal_5ff078a541388.pdfIn PDF document text
    • https://fukimeremunosav.weebly.com/uploads/1/3/1/3/131379236/lilivapofoj-fajabituko-newutajow-juxagetip.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/webipejonavuv/jinotuti.pdfIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/how_to_use_obd1_code_reader.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/65353455588.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/death_note_live_action_japanese_watch.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/wugamomadedopiruzavepa.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_off0000f7ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AE 5084 bytes
SHA-256: dad8e10e083a5d8cd579955ad901ab810584a996261c1c79752045c67401f537
font_01_sfnt_off000108de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108DE 15480 bytes
SHA-256: 41272250ea06df388a0e2fd43abab9ccac2df774cc756ac360950b08d225aef7

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