Malicious PDF — malware analysis report

Static analysis result for SHA-256 07547d8f4d2a6162…

MALICIOUS

PDF

93.5 KB Created: 2021-03-04 01:29:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 2ad0afa8d071a20323945a868c22071b SHA-1: 894f2e5e58e4e3f4a78f2d5395ea4b690792766a SHA-256: 07547d8f4d2a6162522270439cc90975121c22524066bc6dc4aa1f018e9f89a5
126 Risk Score

Malware Insights

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

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/wix?keyword=rca+victor+radio+worth PDF link annotation
    • https://cdn.sqhk.co/zenekukera/iQeUlhi/majebesabonamezabasebal.pdfIn PDF document text
    • http://mamafiposorugul.sportsontheweb.net/external_battery_charger_for_nikon_coolpix_p520.pdfIn PDF document text
    • http://love-your-lips.online/19429696738cxink.pdfIn PDF document text
    • http://pink-echo.club/3019481759134cpd.pdfIn PDF document text
    • http://hopecommunitynaz.com/91823445085ogjz1.pdfIn PDF document text
    • http://ejinaya.com/pemexiluzvn355.pdfIn PDF document text
    • https://cdn.sqhk.co/pozusonitid/Dif5H19/pofepoxuga.pdfIn PDF document text
    • http://fastdonwload.space/what_books_should_i_read_to_prepare_for_medical_school4rw9o.pdfIn PDF document text
    • http://towufato.mywebcommunity.org/2012_yamaha_yfz_450_service_manual.pdfIn PDF document text
    • http://lazategomid.scienceontheweb.net/interpreting_distance_time_graphs_worksheet_tes.pdfIn PDF document text
    • https://cdn.sqhk.co/lilapanorup/0Dgh3ih/7621100029.pdfIn PDF document text
    • https://cdn.sqhk.co/midipijikami/FQhaWJv/76822154330.pdfIn PDF document text
    • http://miwewumexurigan.sportsontheweb.net/xejewamopewuw.pdfIn PDF document text
    • https://cdn.sqhk.co/vujejanar/jhhgPhi/rabidolivovegudesireb.pdfIn PDF document text
    • https://cdn.sqhk.co/jasojime/c3gcZgc/mental_health_first_aid_certification_expiration.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dezezefisimel.rf.gd/67318235051.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/my_grandma_got_run_over_by_a_reindeer_show.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/what_is_analects_of_confucius_all_about.pdfIn PDF document text
    • http://fuwotatikiluwa.epizy.com/srimad_bhagavatam_1st_canto.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_off000126cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126CF 4976 bytes
SHA-256: 17d118f0f5ed65257bdf7ff0cc1c2158eb52d335e5809255827c285a8c6fe252
font_01_sfnt_off000137d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137D1 14728 bytes
SHA-256: 24df0b19cf0eea2c366c7f2fe507fa3fcd820b72918545db76c91f56a294ad3c

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