Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d252d44077b391c…

MALICIOUS

PDF

80.0 KB Created: 2021-03-22 01:39:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9cb3c3bd9fafdeb4019ec7dc60cb320 SHA-1: ddeaa3150ca86f492d3dda82808693d6ba572491 SHA-256: 0d252d44077b391c94a729e91afa3330d6a5a7e8b2dee05d7c86589db9e31551
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with the primary one being 'https://vilenefex.ru/award?keyword=records+baseline+survey+pdf', suggesting a lure to a phishing site. The document body, though heavily obfuscated, contains metadata related to wkhtmltopdf, which can be used to generate PDFs from web content, further supporting the idea of a web-based lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/award?keyword=records+baseline+survey+pdf
    • http://voirlo.xyz/spm_mathematics_formula_listy6h86.pdf
    • https://static.s123-cdn-static.com/uploads/4402519/normal_5fde080c29d5c.pdf
    • https://pimelotug.weebly.com/uploads/1/3/4/5/134576353/4bcb73efc.pdf
    • http://vonexalux.sportsontheweb.net/55033785325.pdf
    • http://copyrighthelpptteam.com/zukigitumeborivoxesugaoygrl.pdf
    • http://reduslim-siteofficial.site/53862484629f9p1y.pdf
    • https://static.s123-cdn-static.com/uploads/4388815/normal_5fdcf95529a98.pdf
    • https://mowavowami.weebly.com/uploads/1/3/4/5/134591552/e468d18d95d.pdf
    • http://samyog.ru/chuchu_tv_apprgsdu.pdf
    • http://firobazotu.sportsontheweb.net/rewasarofezowinujeb.pdf
    • http://musofiron.ru/wivolezojuwi9ci35.pdf
    • https://seritixatot.weebly.com/uploads/1/3/1/0/131070849/5717112.pdf
    • https://cdn-cms.f-static.net/uploads/4412894/normal_60218543ec001.pdf
    • https://totamozosapopa.weebly.com/uploads/1/3/4/7/134712517/xubuvodepawi-todemewuviwun.pdf
    • http://jubisadamafav.22web.org/64412543382.pdf
    • https://puxosuloboja.weebly.com/uploads/1/3/4/6/134677226/nejomitivaloretup.pdf
    • http://jujasoje.iblogger.org/how_to_find_wave_speed_formula.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fosalizuzu/aurelina_dourado_musicas.pdf
    • https://s3.amazonaws.com/zidenigad/amazing_grace_song_by_celtic_woman.pdf
    • http://zefifimagami.epizy.com/ion_block_rocker_sport_bluetooth_not_working.pdf
    • http://fanalejowegop.atwebpages.com/how_to_choose_dental_implant_specialist.pdf
    • https://s3.amazonaws.com/xopugup/speakeasy_meaning_in_english.pdf
    • https://s3.amazonaws.com/wovigebi/61259957679.pdf
    • http://figifikasiwaw.epizy.com/standard_sales_terms_and_conditions_template.pdf
    • http://kibagog.onlinewebshop.net/carrie_play_script.pdf
    • http://lonukidoni.epizy.com/sample_of_conclusion_of_industrial_training_report.pdf
    • http://vekemelegewimo.atwebpages.com/voditubelumivepizabefupov.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f818.bin
e5dd1d5ea63fc8c4fb2b04bd7b40628dbe30c301ee460790d0862655b2b12011		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF818 5456 bytes
font_01_sfnt_off00010ac5.bin
ce8ee3b7aaf6411ebd5af5bdce33820236525ba2018c3d29a0f7b539294de74f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AC5 11252 bytes

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