Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d7ba6bcb6bdd2fc…

MALICIOUS

PDF

74.0 KB Created: 2021-03-21 04:20:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 9362f44d2ad4c07d135d76a7961444ab SHA-1: 785a5e523952232df119a0cae7658a3b5732bf4e SHA-256: 1d7ba6bcb6bdd2fc9c4465e3a9788290dcedc74386dee49f37ddc3c8df6e929d
214 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. It also contains a large number of embedded URLs, suggesting a link farm designed to direct users to potentially harmful sites. The ML classifier and ClamAV detection further support its malicious nature, indicating it is likely a phishing or malware distribution document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://crophysi.ru/strik?utm_term=septa+r5+lansdale+sunday+schedule In PDF document text
    • http://jolixasij.sportsontheweb.net/how_to_rebuild_tippmann_98_custom.pdfIn PDF document text
    • http://kuzexamipapoxip.medianewsonline.com/how_do_you_program_a_universal_remote_to_a_linear_garage_door_opener.pdfIn PDF document text
    • http://zukirudon.mypressonline.com/what_do_you_mean_by_concentrated_solution.pdfIn PDF document text
    • https://motutipe.weebly.com/uploads/1/3/4/6/134674000/labokevelofopa_jowes_tozuxege.pdfIn PDF document text
    • https://vomoxolakixirum.weebly.com/uploads/1/3/1/4/131438067/janepekejix.pdfIn PDF document text
    • https://lopuxewununoj.weebly.com/uploads/1/3/4/7/134748711/xeratigef.pdfIn PDF document text
    • http://tefitagesev.mypressonline.com/86669396543.pdfIn PDF document text
    • https://sabidodavo.weebly.com/uploads/1/3/1/4/131408103/faxunidopumijojokugo.pdfIn PDF document text
    • http://matizaw.mywebcommunity.org/tojufi.pdfIn PDF document text
    • http://pimifawimonidij.mywebcommunity.org/11524370136.pdfIn PDF document text
    • https://tinabatof.weebly.com/uploads/1/3/0/7/130776088/lejegat-vubuvaxuf-gatolu-sawike.pdfIn PDF document text
    • http://sodowetan.mywebcommunity.org/fantastic_beasts_and_where_to_find_them_book_2.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/xifabilejilab/kabhi_alvida_na_kehna_songs._pk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/fojiluwigafilofewetuzagun.pdfIn PDF document text
    • http://lutepotazor.onlinewebshop.net/latin_quotes_about_life_and_love.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/whats_a_dead_star_called.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/adelantado_trilogy_book_one_full_version.pdfIn PDF document text
    • http://vamudijikepefos.rf.gd/gedego.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/raxasovizasefaxus.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/86587112235.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/que_es_la_educacin_ambiental_definicin.pdfIn PDF document text
    • http://vameberimonon.onlinewebshop.net/input_type_file_accept_only.pdfIn PDF document text
    • http://ritajexebezix.epizy.com/bottega_del_caffe_goldoni.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_off0000e2f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F6 5492 bytes
SHA-256: 3162115bd55bc8a96c0e883c3080552709660f06ee9e789abb4e2688bfc3a3b9
font_01_sfnt_off0000f5a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A0 10828 bytes
SHA-256: 522cb26c571e31ce35aaf020ce461b35706df292b92e7cb89b6725176d393019

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