Malicious PDF — malware analysis report

Static analysis result for SHA-256 c21e51362988461b…

MALICIOUS

PDF

85.7 KB Created: 2021-03-25 18:18:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: b7e0a4876483d9ff656394ecb0c26b93 SHA-1: 445b15dc9fbec96975704365dd7aa3595c882f3f SHA-256: c21e51362988461b6e8dc82cc8be6135e4463eb98177d658d85a9941b5566260
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are disguised as legitimate documents or resources. The primary malicious link, 'https://gimoguvi.ru/123?utm_term=drew+brees+college+scouting+report', suggests a phishing or credential harvesting attempt. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gimoguvi.ru/123?utm_term=drew+brees+college+scouting+report PDF link annotation
    • https://zukutalemuz.weebly.com/uploads/1/3/4/5/134582669/9366222.pdfIn PDF document text
    • https://vezulapas.weebly.com/uploads/1/3/0/9/130969209/pakegag.pdfIn PDF document text
    • https://pasugewu.weebly.com/uploads/1/3/1/0/131071180/dovafapopofu.pdfIn PDF document text
    • https://susudomi.weebly.com/uploads/1/3/5/3/135319884/dusevuforo-wewoviv.pdfIn PDF document text
    • https://barijimuje.weebly.com/uploads/1/3/1/4/131406344/kusarogijatoviz.pdfIn PDF document text
    • https://sewetinupas.weebly.com/uploads/1/3/3/9/133997680/madita-sixasetese-mivuvazodavar-saguxe.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/wawedezefibakeloj.pdfIn PDF document text
    • http://jixaravaxagisuf.22web.org/71671575946.pdfIn PDF document text
    • https://suvejeko.weebly.com/uploads/1/3/1/4/131407233/7252319.pdfIn PDF document text
    • https://bokakarepexopo.weebly.com/uploads/1/3/4/7/134750167/6680250.pdfIn PDF document text
    • https://nopuxexej.weebly.com/uploads/1/3/4/4/134498230/jinopas_tifososafufa_zagovogexidat_karetum.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/napejaxosinages/an_introduction_to_numerical_analysis_endre_suli.pdfIn PDF document text
    • http://rogitini.epizy.com/66524363505.pdfIn PDF document text
    • http://jozazumuluvos.epizy.com/berliner_platz_3_neu_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/how_to_reset_yamaha_receiver_rx-v379.pdfIn PDF document text
    • http://novosumagib.epizy.com/jijafiporofogedesokofaba.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/68671967789.pdfIn PDF document text
    • http://kofupugixujodin.epizy.com/google_app_free_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/94420960695.pdfIn PDF document text
    • http://mimonutemabase.epizy.com/platform_movie_songs_video.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_off00010ebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EBF 5124 bytes
SHA-256: e590750c8fdcbaf7640dc0c684409390762830414a23b21440ab2ff59c27815a
font_01_sfnt_off00012059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12059 12180 bytes
SHA-256: b06bfd5f38b6c579f04c5d86411bb912ca45314bbb5f4cf121ecf89d308ec6c8

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