Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b2ec4bbe2098ab2…

MALICIOUS

PDF

86.2 KB Created: 2020-11-24 19:39:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 60ae36678d1c90f26b4fa9bb210348b0 SHA-1: 78cb92b662f6cdc8212cdfde0b65dee81871ba2b SHA-256: 0b2ec4bbe2098ab22e3267ff2efef56f52725742598876cb4cec70201071adbe
244 Risk Score

Malware Insights

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

This PDF file contains a large number of links to external websites, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of a link to a known malicious redirector infrastructure further supports this. While no scripts were explicitly extracted, the PDF structure and the nature of the heuristics indicate it's designed to lead users to potentially harmful sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/123?utm_term=remate+en+voleibol In PDF document text
    • https://jidedenevunuva.weebly.com/uploads/1/3/4/4/134498736/lobulotadevun-wodanojem-faxovile-pekuliratededi.pdfIn PDF document text
    • https://derefejoj.weebly.com/uploads/1/3/4/3/134358497/1797153.pdfIn PDF document text
    • https://bimidupixujeg.weebly.com/uploads/1/3/4/3/134319160/492585.pdfIn PDF document text
    • https://xigunokitipir.weebly.com/uploads/1/3/4/6/134615451/2192054.pdfIn PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/vowes_gogukugujiw_dejodoxezi.pdfIn PDF document text
    • https://bebamewikirebu.weebly.com/uploads/1/3/0/8/130874540/xenawumiremek-fojamimu.pdfIn PDF document text
    • https://fekukutetixamam.weebly.com/uploads/1/3/4/6/134636283/kosiw_segama_zowaminiseli.pdfIn PDF document text
    • https://zifujotali.weebly.com/uploads/1/3/4/3/134310407/3440991.pdfIn PDF document text
    • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/gakixidinugewun.pdfIn PDF document text
    • https://wesodopudo.weebly.com/uploads/1/3/4/2/134234684/tefonitelo_kenukef_wunuwawesavu_majivimi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/6181b55b-e872-43aa-9ee8-bc44481bcf56/bazidumul.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/plagiarism_worksheet_with_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010945.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10945 4552 bytes
SHA-256: 1022e5643a33a7d06659ce16187499ce47f55d9a2db73b281c6414f829a68424
font_01_sfnt_off000118a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118A9 11000 bytes
SHA-256: 2b74ba4ba6b26ada898c384c50ca9dd104fd5800195ac45104068d880de33bfb
font_02_sfnt_off00013c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C93 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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