Malicious PDF — malware analysis report

Static analysis result for SHA-256 b071fba31dfc6007…

MALICIOUS

PDF

82.2 KB Created: 2021-03-18 01:33:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: bb7f83fabeb882f740ea86975b7beef8 SHA-1: 5c7ae27bcf4f4a4b0253c6d5bdaebb106b6c06fe SHA-256: b071fba31dfc600761becb51de3d14626e7bba810599959be24bd2d134901680
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://mezovuduw.ru/strik?utm_term=glute+activation+exercises+mini+band PDF link annotation
    • https://cdn.sqhk.co/ruwonumatag/ajiuCgf/cloudy_in_spanish_name.pdfIn PDF document text
    • http://datujizid.iblogger.org/bunuwugu.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwaseja/iguidgh/best_hits_of_the_80s_cd.pdfIn PDF document text
    • http://xujosigij.iblogger.org/xabagowululotafijabinamu.pdfIn PDF document text
    • https://cdn.sqhk.co/veletafi/jaVy1ih/wetibaj.pdfIn PDF document text
    • https://cdn.sqhk.co/vefemenivu/mijhblo/xopevijuwovimumujewi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zaninenuj.rf.gd/dangers_of_smoking_essay.pdfIn PDF document text
    • http://mijikudetixo.epizy.com/great_wishford_primary_school_ofsted_report.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/hp_officejet_4500_print_test_page.pdfIn PDF document text
    • http://dibesefar.epizy.com/wipisufakidegirab.pdfIn PDF document text
    • https://737bf953-b780-43bc-8af0-312ed5328a40.filesusr.com/ugd/017c44_31d3e335b10f4786b80c4f44ad355464.pdf?index=trueIn PDF document text
    • http://damedosa.rf.gd/39197293033.pdfIn PDF document text
    • http://gegapitigiz.rf.gd/music_genres_word_search_puzzle_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/dubawunivozofijexavava.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/best_1080p_movies_site.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/appserv_2._5_8.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/60816747116.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/50224333962.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/example_of_conversational_speech.pdfIn PDF document text
    • https://31c8a3d4-0132-49f1-a04f-09c79d03e01f.filesusr.com/ugd/a4da84_3dcfe99da0144ebfab2c43af4594fbcb.pdf?index=trueIn PDF document text
    • https://03dfb0eb-7fe6-4188-ad87-ea2b88df7b19.filesusr.com/ugd/f967ac_ba3476734f7a48c6be7dc4510cff6037.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/63785900870.pdfIn PDF document text
    • http://gitakatad.epizy.com/bolt_action_rifle_rust_legacy.pdfIn PDF document text
    • http://naremijex.epizy.com/89739103878.pdfIn PDF document text
    • http://roworozirad.epizy.com/redizisedajatudalep.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101F3 5384 bytes
SHA-256: 92cc3a90c8b6360b13e0b68e3933b4498f261c5212395334ce9b57bc8660b917
font_01_sfnt_off00011437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11437 10844 bytes
SHA-256: 07465f22cbbd45009e7f092fff50c597ace607ba1f992905fcb7c73c620d2b11

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