Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ea2319cbbb19125…

MALICIOUS

PDF

153.9 KB Created: 2021-03-11 09:21:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b3d00f8fb1e1d9627ff97c63447322ea SHA-1: 38c102bc6a03b85f471d1c51e0226c612d10be11 SHA-256: 7ea2319cbbb191251410aa7659ab0aaabe3dea41316877d02f9295eaba57c6a7
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9985

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://gimoguvi.ru/strik?utm_term=how+did+the+triple+entente+win+ww1 PDF link annotation
    • https://tefegepivovopuf.weebly.com/uploads/1/3/5/3/135311357/jalovoz.pdfIn PDF document text
    • http://moneymaya.site/ruvemerafijevikabovygy.pdfIn PDF document text
    • http://mekomob.getenjoyment.net/is_the_nj_real_estate_test_hard.pdfIn PDF document text
    • http://drnextact.xyz/31674977330z58s0.pdfIn PDF document text
    • http://afracheat5.xyz/xajupakajawedulztxpe.pdfIn PDF document text
    • http://beautytopshop.site/georgia_hosa_competitive_events_guidelinesk8de8.pdfIn PDF document text
    • https://cdn.sqhk.co/seduregudire/Jy6SRii/agneepath_full_movie_1990_hd.pdfIn PDF document text
    • https://likizosuzi.weebly.com/uploads/1/3/4/8/134886942/dotawidawi.pdfIn PDF document text
    • http://xekizarobofoza.22web.org/domow.pdfIn PDF document text
    • http://pedumerik.sportsontheweb.net/tezikuneraranefiverak.pdfIn PDF document text
    • https://cdn.sqhk.co/texojijoraso/zelmiiO/71198172559.pdfIn PDF document text
    • http://static-get.top/autodesk_vault_server_20159m29l.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/guest_relations_director_job_description.pdfIn PDF document text
    • http://dektesheff.xyz/jutuv7cy1d.pdfIn PDF document text
    • http://nupubidodeje.22web.org/legon_admission_letter.pdfIn PDF document text
    • http://vinnipoh.fun/zadanenupojogibofismbvlg.pdfIn PDF document text
    • https://labatozun.weebly.com/uploads/1/3/1/6/131607827/gipolitix.pdfIn PDF document text
    • https://wavujosivisero.weebly.com/uploads/1/3/2/7/132740585/7d1bf26370f016f.pdfIn PDF document text
    • https://pepagefowajuna.weebly.com/uploads/1/3/4/7/134738543/faxiborigutib-sebapudaj-betuxaxu.pdfIn PDF document text
    • https://cdn.sqhk.co/jimevexir/j3jgjjf/free_movies_online_2019_app.pdfIn PDF document text
    • http://rotawafuwuno.scienceontheweb.net/application_of_artificial_intelligence_in_business.pdfIn PDF document text
    • https://cdn.sqhk.co/mifigatira/qjaqhdN/wepusufisuzogufusekaxet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rafesule.rf.gd/duzinefidukodolow.pdfIn PDF document text
    • http://sofibimibojas.myartsonline.com/mafadawosifaxeridoselok.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00020ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20EBC 4124 bytes
SHA-256: 328590c08baa49b74dbd4ede89fcd0bf76a30ed30bc5c9e986cebb858b4695f3
font_01_sfnt_off00021d3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21D3C 4764 bytes
SHA-256: d14ed11fd739b942a6a0cfe9fad61d01be0096d20f1948cafe04feb4a3ba9d96
font_02_sfnt_off00022d77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22D77 15312 bytes
SHA-256: 825de437648c3ab6f9d60a56b47009d058ba6e65c8c2e361ba7e2fe56351a992

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