Malicious PDF — malware analysis report

Static analysis result for SHA-256 e03e09a2bc21664b…

MALICIOUS

PDF

75.4 KB Created: 2021-03-07 19:45:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4b16315a1b58ac37a908f310f17c3018 SHA-1: 5fde9f8c75b45a007dede2f7c8930532fefd6035 SHA-256: e03e09a2bc21664bffa6a91a1e78fa5e86f1e6512e83b87670ca21cdeaa0c33e
186 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 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 0.9998

Heuristics 6

  • 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.
  • 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://dugedepap.ru/wix?keyword=cydia+ios+13+tweaks PDF link annotation
    • https://cdn.sqhk.co/gidetixi/Yefia8r/metetetudazusado.pdfIn PDF document text
    • https://cdn.sqhk.co/nidimejuzu/hpL4C4w/favavopavanilemesamefut.pdfIn PDF document text
    • http://mufutekuson.getenjoyment.net/bifivetajuvebofapozevi.pdfIn PDF document text
    • https://cdn.sqhk.co/nivavepe/jjjZhaO/cool_fonts_font_generator_font_changer.pdfIn PDF document text
    • https://cdn.sqhk.co/litalile/jkFhejj/8_slices_menulog.pdfIn PDF document text
    • https://cdn.sqhk.co/dogatefi/vCgjVmP/dual_federalism_is_the_practice_of.pdfIn PDF document text
    • https://cdn.sqhk.co/wixadigizal/hdMCQjd/endless_highway_the_music_of_the_band_download.pdfIn PDF document text
    • http://lerimofo.mywebcommunity.org/59085870890.pdfIn PDF document text
    • https://cdn.sqhk.co/vasozaponem/dJghifP/lofam.pdfIn PDF document text
    • https://cdn.sqhk.co/vunalogivefu/jef5P30/piperotirejo.pdfIn PDF document text
    • https://cdn.sqhk.co/bulunazi/fZjigjp/66777407941.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wikukodukoja.onlinewebshop.net/workpro_quantum_9000_series_replacement_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49cbd326-3fdf-4b78-92f0-c6a7d5f57f91/zabuzusonapil.pdfIn PDF document text
    • https://e18e6c05-101e-4f41-9c4d-f518aea09dbb.filesusr.com/ugd/7972b3_e0679b43a36b41309f094acc284e25fd.pdf?index=trueIn PDF document text
    • http://zatuvejamubolo.atwebpages.com/how_to_use_a_rice_cooker_zojirushi.pdfIn PDF document text
    • https://ce322291-b3da-4cc2-ae0f-523e25daec44.filesusr.com/ugd/4530da_4e52901602ea446b8d01c2dea3f7b01e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/80da2ba7-8e7c-4fff-8738-d9fa604b9b66/dutemesob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/648cabd4-f7a1-4d93-81c7-cf067447b808/what_does_the_word_tempest_mean_in_japanese.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_off0000ebba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBBA 5068 bytes
SHA-256: e72a61ca86b8e4d7fa9f769b02f2f447961330466fb97c0fd05bccba2dedc441
font_01_sfnt_off0000fd31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD31 10332 bytes
SHA-256: 2726acb602e5ba9bef3d1f280c338d6f87440f62cece95d30e7782738adbc097

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