Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfaf302c1c38d2f2…

MALICIOUS

PDF

99.8 KB Created: 2021-03-31 01:31:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e9a04addc3b119d48e9e1d725f4580fc SHA-1: b1343e0e2798e12d6e0b23a2f08b696100ac81f9 SHA-256: dfaf302c1c38d2f28af9adb6f75b0347ecf9f2cbf0f2fb80f05c1f72821ce562
186 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded external links, a technique commonly used for SEO spam or phishing campaigns. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were extracted, the primary function appears to be redirecting users to potentially harmful websites through the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://soxebez.ru/award?keyword=bach+chaconne+pdf+piano PDF link annotation
    • http://pozufopajosel.mypressonline.com/surah_al_waqiah.pdfIn PDF document text
    • https://cdn.sqhk.co/zaweniwefi/w2kijhd/36428222891.pdfIn PDF document text
    • http://delozofize.scienceontheweb.net/89601716408.pdfIn PDF document text
    • https://cdn.sqhk.co/vanujapuduti/hS8vgiE/sniper_killer_shooter_3d_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/mesafovojifo/bhuKjcy/ruduwuzovofan.pdfIn PDF document text
    • http://nemosixumeki.mypressonline.com/mawupaj.pdfIn PDF document text
    • http://dipenoguzel.sportsontheweb.net/75188168240.pdfIn PDF document text
    • http://sekatiduzogi.22web.org/medical_dictionary_download_free.pdfIn PDF document text
    • http://nisefobodidave.22web.org/yo_soy_tu_amor_en_ingles.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jatijunulefare.epizy.com/artificial_neural_network_rapidminer.pdfIn PDF document text
    • https://e5720c39-3c1c-4a52-9be9-509675281b5a.filesusr.com/ugd/0010c8_6b143c1944cc4acd88b87e1c95a616d8.pdf?index=trueIn PDF document text
    • https://22520ec4-2132-45a5-98b8-54db1b71d3ea.filesusr.com/ugd/b33b96_c00f75f1fbb9463d906171fbe089ac48.pdf?index=trueIn PDF document text
    • http://libowilibedu.epizy.com/wugezezanek.pdfIn PDF document text
    • http://pozijawikubinun.myartsonline.com/dofotiba.pdfIn PDF document text
    • https://000bb656-a8cb-4e8b-9327-0b0ec99f56fe.filesusr.com/ugd/3f812e_5d9db10274b34a7bb2fcbbb1b5beef07.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5f9b20e-8e5e-4a0b-86bf-11190211a177/crazy_kind_of_love_movie_plot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/771cacf6-aba2-4d0c-9ea2-f8b02cf66267/pubefurogudijosub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49f1d537-0ae4-4e2f-b471-775d1978925c/duzipawemugopapasi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de9dada0-b7dc-4f18-aa49-b5e440418524/60779447166.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92ac3284-bb2d-4271-9fae-b66b97c6f64a/cuales_son_los_pasos_del_proceso_de_investigacion_cientifica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaa1357c-5b5a-4226-b5e0-733c94b11c1a/lg_fridge_service_centre_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffd00a1a-d989-4410-afab-4b2812e559a3/80819885866.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a4054b2-20a4-4286-8a32-c0ef4ccfd718/chilam_balam_restaurante_barcelona.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000131bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131BB 4988 bytes
SHA-256: 6786f573f93dfb889a72e9603b886799b10a59136333966f20ed60e912c2a238
font_01_sfnt_off000142bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142BC 11780 bytes
SHA-256: 44666af6f7541d2a08a8c0bf6ac280a191e1c339fc82ec37024bea5c16f110d3
font_02_sfnt_off00016a6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A6C 16184 bytes
SHA-256: f0d7227652c39c0ed3a674eb50801baccdef2bbf27cbfcf74ce440b78e632b52