Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1d51ffc9c316821…

MALICIOUS

PDF

79.3 KB Created: 2021-04-17 06:25:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 73f663ad3e53e51e9925b9e1e99e3509 SHA-1: d04a2733b53ed32bdedc0b9f1fdf82aafab2f4e0 SHA-256: e1d51ffc9c316821389e579f28a9e9dff871f98a5321e03d938cc2c2befdf42d
186 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing lure, containing a large number of external links disguised as a guide book. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for redirecting users to phishing sites or distributing further malware. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest an attempt to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://vilenefex.ru/strik?utm_term=scout+guide+book+in+marathi+pdf PDF link annotation
    • https://tigibivimibi.weebly.com/uploads/1/3/4/3/134344299/5575090.pdfIn PDF document text
    • https://limifotediko.weebly.com/uploads/1/3/5/3/135325738/9007089.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462351/normal_5fd7b19a095e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425768/normal_5fe6eb63a14af.pdfIn PDF document text
    • http://wapajag.22web.org/mapa_cajon_del_maipo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486033/normal_60372790ce78e.pdfIn PDF document text
    • https://nowigusoludi.weebly.com/uploads/1/3/4/2/134266380/4346228.pdfIn PDF document text
    • https://vezejajanobel.weebly.com/uploads/1/3/1/6/131606482/453236.pdfIn PDF document text
    • https://cdn.sqhk.co/kawurefeki/jfphj7S/25527042182.pdfIn PDF document text
    • https://wetugaremuzen.weebly.com/uploads/1/3/5/2/135298520/telijabopuroj.pdfIn PDF document text
    • https://cdn.sqhk.co/vekepafate/shheiC9/gre_vocabulary_builder_test_prep_apk.pdfIn PDF document text
    • http://xiwotafajiloluf.22web.org/how_to_use_data_science_in_sales.pdfIn PDF document text
    • https://cdn.sqhk.co/genamudazunu/amNMjb5/zobitobidu.pdfIn PDF document text
    • https://cdn.sqhk.co/sifalavuxozo/NiaVdhi/pay_pmc_tax_online.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://82a15d5c-09b3-4b2c-b6d5-cdf01964cb25.filesusr.com/ugd/5adcb9_ffc455d64af146e696a4cd88b71d916f.pdf?index=trueIn PDF document text
    • http://rerorisa.epizy.com/jingle_bells_sheet_music_for_recorder.pdfIn PDF document text
    • http://gojuveri.rf.gd/east_of_eden_book_parents_guide.pdfIn PDF document text
    • http://jotirejubano.epizy.com/30819131535.pdfIn PDF document text
    • https://60f6da8c-824c-4163-aae9-6195f2ac7ed4.filesusr.com/ugd/7f16bd_4da8e100888049ba939e1a201646912a.pdf?index=trueIn PDF document text
    • http://dobupefibukin.epizy.com/duribinorofozupuwe.pdfIn PDF document text
    • http://delifas.epizy.com/vs_code_angular_html_formatter.pdfIn PDF document text
    • http://wovovaj.rf.gd/morokexejalomomunisige.pdfIn PDF document text
    • https://cc0b58a5-7bf4-4b41-9cd7-d9bc0cd2cc6f.filesusr.com/ugd/6dc98b_b2220761db8f455e956f0985ac435eaf.pdf?index=trueIn PDF document text
    • https://ed0f7819-48b4-4c0d-9119-93de03d81b9c.filesusr.com/ugd/e481ce_d66f53e429234d4bade4a21a55d60bc1.pdf?index=trueIn PDF document text
    • http://lawuzuzadi.rf.gd/schema_d_amplificateur_de_puissance.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_off0000f5ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5AC 5664 bytes
SHA-256: 0eabda419453ee1d006c1f934ccac50fb83ffd9d39d53b7fb89080aa2047d4b6
font_01_sfnt_off000108c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108C8 10912 bytes
SHA-256: 52adbf87d1fbeed1449ffdf93b2ccdf511511871caf93f81b94d2789bc446770