Malicious PDF — malware analysis report

Static analysis result for SHA-256 a79e99258a551024…

MALICIOUS

PDF

78.5 KB Created: 2021-04-01 01:50:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bb61e6f9481a74fe18b545ace34c6d85 SHA-1: 105ee1880ebddcf8de287cd87a452e7bb52c009c SHA-256: a79e99258a551024e1fc9f926b856a5b45ad7dbcc8440036316f7b023a0f8ab4
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/wix?keyword=airbnb+coupon+code+that+works+2020+uk PDF link annotation
    • https://semogabetik.weebly.com/uploads/1/3/1/4/131482882/nugitukixijebemevawa.pdfIn PDF document text
    • http://wemuwetafivaxe.sportsontheweb.net/fofozugiwuka.pdfIn PDF document text
    • http://dimax.website/wemopavinomawupatirosubvj.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/counselling_skills_for_dummies.pdfIn PDF document text
    • https://cdn.sqhk.co/kisasizaro/dajicAo/best_business_books_for_high_school.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366319/normal_5fefb69f8b1d9.pdfIn PDF document text
    • https://gasezojilatinoj.weebly.com/uploads/1/3/1/4/131455825/1961165.pdfIn PDF document text
    • https://cdn.sqhk.co/govazilose/s3idiag/insulin_glargine_mechanism_of_action.pdfIn PDF document text
    • http://virujurarajilef.getenjoyment.net/carbon_steel_pipe_fittings_catalogue.pdfIn PDF document text
    • http://akvatehnika74.ru/titanic_movie_in_hindi_filmyzillaqysmi.pdfIn PDF document text
    • https://mikixobitesa.weebly.com/uploads/1/3/0/7/130776626/b294a9888e.pdfIn PDF document text
    • https://bowineno.weebly.com/uploads/1/3/4/8/134868267/7664680.pdfIn PDF document text
    • https://widonudafedezu.weebly.com/uploads/1/3/0/7/130776490/8209479c5ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448733/normal_6015abdc53bdc.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/jotogorurekuro/dekig.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/how_to_connect_bluetooth_to_jvc_kd-s29.pdfIn PDF document text
    • http://nisetekotixob.myartsonline.com/centrifugal_pump_troubleshooting_maintenance.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/sonic_all_stars_racing_transformed_android_mod.pdfIn PDF document text
    • http://tonavisuma.onlinewebshop.net/kikakovekutune.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/weber_spirit_classic_e-310_3-burner_gas_bbq_dimensions.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/23809244646.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_off0000f21f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21F 5688 bytes
SHA-256: 1ecb617bee90587db09796e4f6f5696b6e7c32b6fea5fdfe717f3c51d57b57eb
font_01_sfnt_off00010584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10584 11736 bytes
SHA-256: a35e9161727ce4327c64af590e8a32393ad21998cb518f468f977d0a46d60b1d

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