Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2b2c31865e1ece9…

MALICIOUS

PDF

76.6 KB Created: 2021-02-18 15:46:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9d95efa4f3d410e1ae48e7205d4faf51 SHA-1: e12aceef9e326e3990621f12d16782dd47fa88e1 SHA-256: f2b2c31865e1ece9d6552351681210d73cfa608dfb96b9f09b1ff0024d600397
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://jottigo.ru/wb?keyword=why%20does%20trauma%20cause%20shaking%20hands PDF link annotation
    • https://cdn.sqhk.co/ripalufix/iffbpih/13825859134.pdfIn PDF document text
    • https://zujanotoze.weebly.com/uploads/1/3/4/4/134476942/xupavuwatusimafutax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379029/normal_6029adc67e07d.pdfIn PDF document text
    • http://biraxubidu.22web.org/fax_cover_sheet_print.pdfIn PDF document text
    • https://sojenakituvewo.weebly.com/uploads/1/3/3/9/133986345/pekosetu_gevig_tuwezap_tixulitala.pdfIn PDF document text
    • http://vefefex.iblogger.org/23254292357.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414173/normal_600a68edaf737.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405185/normal_6018e235c365c.pdfIn PDF document text
    • http://kovokowem.iblogger.org/21361411985.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480187/normal_601fdcc10b598.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://girogabunuxumu.rf.gd/alloys_pogil.pdfIn PDF document text
    • http://ziriboxemo.epizy.com/nutrition_assessment_tools.pdfIn PDF document text
    • http://vagilamiporaw.epizy.com/59617255855.pdfIn PDF document text
    • http://wibukosumasej.rf.gd/933716081.pdfIn PDF document text
    • http://vutagefen.epizy.com/sql_payloads_cheat_sheet.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_off0000edcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCF 5500 bytes
SHA-256: 039f51cc50398fab51539744db422c20d57ca565622b9047ddf9a0d64d799908
font_01_sfnt_off0001006f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1006F 11084 bytes
SHA-256: 63ffe2677825e2694237fc47c6ae547c47105371fcd0dbb597b2ef63b9942f35