Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eee40a954fb8d25…

MALICIOUS

PDF

73.7 KB Created: 2021-02-11 19:03:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3992e5682fe5db11191f90e2710fefe3 SHA-1: 11bdc57d17e1900355e4f82bc2333f2deef5c130 SHA-256: 2eee40a954fb8d2563e964bf09d21e0b5d754e4e0db50e8e050187ea828788b2
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a significant number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially harmful content or phishing sites. The presence of embedded URLs and the PDF's structure point towards an attempt to exploit search engine optimization techniques for malicious distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://maypoin.ru/wix?keyword=flip+dunk+level+38 PDF link annotation
    • https://vesixogis.weebly.com/uploads/1/3/4/8/134863987/sufibur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444882/normal_6021541313093.pdfIn PDF document text
    • http://nobelopagix.22web.org/75958663516.pdfIn PDF document text
    • http://soul-felt.com/sniper_3d_assassin_cheats_without_human_verificationf3mew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389793/normal_600baa66e969d.pdfIn PDF document text
    • https://nizevamil.weebly.com/uploads/1/3/2/8/132814567/783b830ad9549a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451929/normal_5ff4f1d7b739c.pdfIn PDF document text
    • https://kofudavobew.weebly.com/uploads/1/3/4/6/134602163/3df3965b2df.pdfIn PDF document text
    • https://fozaronu.weebly.com/uploads/1/3/5/3/135349809/gegiw_xevovu_mesaluluza.pdfIn PDF document text
    • https://nidiladidubupa.weebly.com/uploads/1/3/4/7/134753920/gowagigeroja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476578/normal_5fe9628434867.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421365/normal_5fcef03f13410.pdfIn PDF document text
    • http://tisimewifexumi.iblogger.org/formato_anamnesis_psicologica_para_adultos.pdfIn PDF document text
    • https://notaxivarem.weebly.com/uploads/1/3/4/6/134633458/82a16.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
    • http://xixovunutev.epizy.com/alcoa_data_integrity.pdfIn PDF document text
    • http://sivigowukom.epizy.com/c_r_n_full_form.pdfIn PDF document text
    • http://nogobixa.epizy.com/27639885775.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_off0000d988.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD988 4600 bytes
SHA-256: 1c1b84f03e0599b3b86915fd188e24d65bac986fe9ea8343aabc2ca77d6fb8db
font_01_sfnt_off0000e936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE936 10052 bytes
SHA-256: 5f7aac3ea840e3db1c29751dffc11a79acaff41bac2aa83b23017a112653af36
font_02_sfnt_off00010b87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B87 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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