Malicious PDF — malware analysis report

Static analysis result for SHA-256 d02d6b6b1d62f226…

MALICIOUS

PDF

69.1 KB Created: 2021-03-16 22:22:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 09ef09853d0860955fcfb0c9010a5ed4 SHA-1: 66bf33e07501fb917ad00d8e323c0b2f9ae1d183 SHA-256: d02d6b6b1d62f226f14c37e286c4d2b947a508e291738ecbca7cf13bce95d180
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a significant portion pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a spearphishing attachment designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/wix?keyword=rama+and+sita+book PDF link annotation
    • http://zonerokemub.getenjoyment.net/how_to_do_citation_in_word_2013_from_specific_page.pdfIn PDF document text
    • http://biniwitovo.mywebcommunity.org/avestan_alphabet.pdfIn PDF document text
    • http://1xbet-sportstavki.fun/fannie_mae_guidelines_for_large_depositsax37u.pdfIn PDF document text
    • http://sputnews.com/91824068584e9jod.pdfIn PDF document text
    • http://ch-redirect.icu/meloxafibefeledj2.pdfIn PDF document text
    • http://gtomishebs.xyz/jotosf9wv0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gezixus.myartsonline.com/personajes_famosos_de_mexico_muertos.pdfIn PDF document text
    • https://0c2a99dd-71fd-4a0d-b96f-672cfa785c21.filesusr.com/ugd/515c54_8b6f2ee484774e5d9026b9ae468745be.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c6cf314-837d-4b30-b2e9-52a53d7cdb3f/graphic_designer_resume_sample_jobhero.pdfIn PDF document text
    • http://rawigukegopafot.onlinewebshop.net/how_to_take_secret_miracle_honey.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/donation_website_templates_free.pdfIn PDF document text
    • https://d89a15f7-21b5-45f0-b9b4-bc5b7be68842.filesusr.com/ugd/18e821_4d67da36898d497ea9a7e5719c1c15ed.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/xatenudotejeredoga.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/gegelunepazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1214a01-f19c-46d7-84ea-980e0a351127/68490849264.pdfIn PDF document text
    • https://200ee3fc-349d-4871-b5c3-2c1c69b60476.filesusr.com/ugd/7b00a0_2c3a69feb13e455eb43f66bdeffa9b1c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/anjaan_songs_free_starmusiq.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/557ff9e0-1755-444f-8845-8a9f326a5bb0/telupu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b1ac018-f9e2-4cbe-90d5-ebce93951ce8/66528464687.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85b62ee1-6533-43d7-8f2f-f1b40e1f0b2d/fubunukafujinizazofaz.pdfIn PDF document text
    • https://6974b9b2-fc2a-4e9b-9495-84ff65489eb7.filesusr.com/ugd/395280_3bccadb795d3479abfe3fa4cde14e6a4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mokamoba/are_pdp_xbox_one_controllers_good.pdfIn PDF document text
    • http://supajiwa.myartsonline.com/kovegobo.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/broadsheet_brunswick_breakfast.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_off0000d2c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C9 5056 bytes
SHA-256: 8e4df239c6c94ece8a863de64de550fcf49a2317c4fda09749e5dff425ea338f
font_01_sfnt_off0000e3ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3ED 10396 bytes
SHA-256: d912815f61cbebfd0f058feaf43d5b7a5739ab6fa2b548f49e2efa3bc3d59689