Malicious PDF — malware analysis report

Static analysis result for SHA-256 05dbad0927ebe0cf…

MALICIOUS

PDF

77.0 KB Created: 2021-03-17 22:09:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 0ebaffb837a683e9cfec490a495daf92 SHA-1: 5d43668a847781a4c64fdcda0bd1677633bb4676 SHA-256: 05dbad0927ebe0cf7f99585a171ff9b49ba4771121b7e29757d264bbda660dfe
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing operation. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. No scripts were extracted, but the presence of many external links indicates an attempt to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://bologen.ru/wix?keyword=ramadan+2020+dates PDF link annotation
    • http://tadugebakonuged.getenjoyment.net/the_christmas_carol_1984.pdfIn PDF document text
    • http://mujabelor.mywebcommunity.org/biochemical_tests.pdfIn PDF document text
    • http://kutejovanog.getenjoyment.net/metodologia_de_la_investigacion_cesar_augusto_bernal_torres.pdfIn PDF document text
    • http://dizurexemubegog.mygamesonline.org/dadiv.pdfIn PDF document text
    • http://wovoradomumakil.medianewsonline.com/majubifabe.pdfIn PDF document text
    • http://xinuvaro.sportsontheweb.net/what_does_8_beeps_mean_on_a_dell_laptop.pdfIn PDF document text
    • http://nesorus.mywebcommunity.org/46261412201.pdfIn PDF document text
    • http://fuwijumazawad.mywebcommunity.org/30930244341.pdfIn PDF document text
    • http://tpdreport.com/what_does_tiger_moth_caterpillar_eat3lpp4.pdfIn PDF document text
    • http://findfreegirl.com/73036824004q8jjj.pdfIn PDF document text
    • http://uggi-ugg.com/linking_words_list_english_arabiccbc7i.pdfIn PDF document text
    • http://pojapir.mygamesonline.org/simplesmente_acontece_baixar.pdfIn PDF document text
    • http://xovuwowim.mypressonline.com/star_chart_northern_hemisphere_summer.pdfIn PDF document text
    • http://fizebiredasibi.mypressonline.com/what_happened_to_mary_rowlandson.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wugerubuvugox.myartsonline.com/zuredasedegopagudu.pdfIn PDF document text
    • http://telosizaba.onlinewebshop.net/what_does_the_uncle_sam_character_represent.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d110e73-fc7a-4e30-ae24-e457b0c762b6/sherwood_rx_4109_remote_control.pdfIn PDF document text
    • http://neketepa.myartsonline.com/fernando_pessoa_poesia.pdfIn PDF document text
    • http://kuwijiti.myartsonline.com/27095330382.pdfIn PDF document text
    • http://zezofakarol.myartsonline.com/28202068813.pdfIn PDF document text
    • http://vubelifijam.atwebpages.com/changing_fuel_filter_mercury_150_efi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e05db0c-84c8-4aa7-a2fb-c7d71bdc5e4a/67609668494.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_off0000f178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF178 5124 bytes
SHA-256: d8900a387bd558692cbcb07a7cca0939f28bf3c09e691011215ea1a193fd0b81
font_01_sfnt_off000102d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102D5 10704 bytes
SHA-256: 881839e3fa4ea64a724dc026591ff3a7230df7588f6377c222d73f7a302400ca

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