Malicious PDF — malware analysis report

Static analysis result for SHA-256 675cce10862f7d18…

MALICIOUS

PDF

74.7 KB Created: 2021-02-26 03:19:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: f08482e630de4366c0e0075db3d2a61e SHA-1: 1dee4250bdc6609bb39798d246379096a53c59f5 SHA-256: 675cce10862f7d181af1be0437c909cf7daee38db6b41520e71dacf662c40d9d
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a large number of embedded links, many of which point to external resources, indicating a link farm or redirection strategy. One critical heuristic firing identified a link to known malicious redirector infrastructure at 'https://yafferge.ru/strik?utm_term=how+much+does+it+cost+to+get+a+computer+screen+repair'. The ML classifier and ClamAV also flagged this PDF as malicious, supporting a phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://yafferge.ru/strik?utm_term=how+much+does+it+cost+to+get+a+computer+screen+repair In PDF document text
    • https://patijunig.weebly.com/uploads/1/3/0/9/130969449/4026631.pdfIn PDF document text
    • https://tewetakejuduz.weebly.com/uploads/1/3/2/7/132740850/32caf6.pdfIn PDF document text
    • https://cdn.sqhk.co/wajerewuwer/Ajdidih/jajob.pdfIn PDF document text
    • http://nofawemew.iblogger.org/46277719946.pdfIn PDF document text
    • http://kopogaxepaku.sportsontheweb.net/matlab_plot_line_size.pdfIn PDF document text
    • http://siwivelijutore.medianewsonline.com/rain_bird_esp-rzx_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/gijosevozu/NyieSpb/tuverizivuzapux.pdfIn PDF document text
    • https://cdn.sqhk.co/rozopebak/8ifk4hg/rocket_launcher_fortnite_location.pdfIn PDF document text
    • http://goxakawelapa.22web.org/blues_march_benny_golson_sheet_music.pdfIn PDF document text
    • https://waxalema.weebly.com/uploads/1/3/4/3/134364729/kejidogi_wevunipujenitez_ruvelelibu.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/gagotaniwipure/descargar_diccionario_espaol_ingles_gratis_para_pc.pdfIn PDF document text
    • http://xuneviwek.epizy.com/all_american_930_canner_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/crystal_reports_latest_version_free.pdfIn PDF document text
    • http://fufebelanamug.rf.gd/12058319009.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/scratch_for_macbook_air.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/mystery_case_files_escape_from_ravenhearst_walkthrough_big_fish_games.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/outwitt_granny_mod_menu_1._7.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/ralorulafu.pdfIn PDF document text
    • http://todonoto.epizy.com/pakakekipaxodukulewuno.pdfIn PDF document text
    • https://s3.amazonaws.com/fisulefajow/bafibozalavubolinexom.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/solving_trigonometric_equations_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E6 5508 bytes
SHA-256: 6f97386e756a5a39cf66aab664e2a732921c8e712fddd34b4dc56bb7894e6795
font_01_sfnt_off0000f582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF582 11840 bytes
SHA-256: c99d3368856b468bacae2029327baa051fa846cd5c6039846111b33dabd3059d

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