Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ebd137341c5eaab…

MALICIOUS

PDF

74.8 KB Created: 2021-03-03 17:00:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 093e9e5e87a63a3d08e186f3e62e9ede SHA-1: 6394a4113e909db846bfeb4b6d86cecc56e2727e SHA-256: 8ebd137341c5eaab4669fece92a136721479f2e56f0ff276235ce23c43355ad9
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious intent. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing operation. The presence of PDF_URI and EMBEDDED_URL heuristics further supports the attack pattern of directing users to external malicious 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://dugedepap.ru/award?keyword=what+are+the+7+deadly+sins+catholic PDF link annotation
    • http://usesol.xyz/pogururabezirammz1t.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/sunbeam_heated_blanket_f2_error.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuzigup/1WrCwsU/basketball_local_arcade_game_kmart.pdfIn PDF document text
    • http://gtomishebs.xyz/4909674626216va8.pdfIn PDF document text
    • http://tapabafana.22web.org/10708449720.pdfIn PDF document text
    • http://wozutujetotox.iblogger.org/bstc_solved_paper_2018.pdfIn PDF document text
    • http://kedugobepuged.mywebcommunity.org/nanirovokikajeza.pdfIn PDF document text
    • http://datujizid.iblogger.org/dexewira.pdfIn PDF document text
    • http://gratoramaa.website/150307118699ty20.pdfIn PDF document text
    • http://jokojujut.medianewsonline.com/genimixufev.pdfIn PDF document text
    • http://pek-24.cc/modern_quantum_chemistry_szabo_solutionssmfi8.pdfIn PDF document text
    • https://cdn.sqhk.co/xibidodoko/JjeUp9Z/42826659631.pdfIn PDF document text
    • https://cdn.sqhk.co/kufiremikaf/aha3AGW/nedajub.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/dowate.pdfIn PDF document text
    • http://uose.xyz/lugizuvum7yt1i.pdfIn PDF document text
    • http://vobefoli.iblogger.org/hadis_40_imam_nawawi_hadith_2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tudaxagobex.rf.gd/32113444834.pdfIn PDF document text
    • http://ligoroxenafof.atwebpages.com/nortel_networks_cancel_call_forwarding.pdfIn PDF document text
    • http://tujefuguxofela.rf.gd/takunezonujavodifupevimop.pdfIn PDF document text
    • http://fudowoxalukiki.rf.gd/79327302036.pdfIn PDF document text
    • http://wuxirakagatijir.epizy.com/2008_honda_accord_service_code_a13.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_off0000e6d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D0 5220 bytes
SHA-256: acfcde523930e5ea1d72d5a7abca871500e7a19eef51384ea91dd6dff615faa7
font_01_sfnt_off0000f8a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A6 10980 bytes
SHA-256: 2eb5cbd738b340363980f88af0d5b2a3cee730efb530904cba184557faf93579

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