Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cfb83306b6e6624…

MALICIOUS

PDF

69.1 KB Created: 2021-03-21 09:05:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3f9a03ab518edb04f06884e5bbdfc3a5 SHA-1: 53df7ceebeec0aaad7460a2beb90c0e47c685610 SHA-256: 2cfb83306b6e662487e089e650a1134d9828666cde7fd12992e008bb2721cf26
126 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF contains numerous embedded URLs pointing to a link farm hosted on disposable domains, suggesting a phishing or redirection scheme. The presence of external URIs and the link farm behavior are indicative of an attempt to direct users to malicious content, likely for credential harvesting or malware distribution.

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://jacksth.ru/wix?keyword=trieu+con+tim+pdf PDF link annotation
    • http://xakidofe.sportsontheweb.net/kawasaki_fh580v_oil_filter_cross_reference.pdfIn PDF document text
    • http://kersita.space/26297174480ifkye.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411483/normal_60404fbe1f7a8.pdfIn PDF document text
    • http://wgathering.org/xfinity_tv_remote_app_not_workingp4pmv.pdfIn PDF document text
    • https://jifalutisapore.weebly.com/uploads/1/3/4/7/134772579/5487845.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424645/normal_60282e684fd6d.pdfIn PDF document text
    • https://wakevilapiz.weebly.com/uploads/1/3/4/9/134903367/poduririnakogewasetu.pdfIn PDF document text
    • http://xamoxipuwizutux.scienceontheweb.net/nurebazijakepopejo.pdfIn PDF document text
    • http://idealica-ituficiale.website/dururodelazu67jxv.pdfIn PDF document text
    • https://juzasofudabin.weebly.com/uploads/1/3/0/7/130775050/gawokukagen-xomiz-gitipulef.pdfIn PDF document text
    • http://fredo.run/nakolalel7n27.pdfIn PDF document text
    • http://figimumagoko.mygamesonline.org/24349880478.pdfIn PDF document text
    • http://gaydating.world/87569231322hsmbz.pdfIn PDF document text
    • http://minosijasif.mypressonline.com/anatomie_de_l_appareil_genital_de_la_femme.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/812c48c9-e647-421e-acc3-0b327681c9a7/75292682767.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc96a2b9-47a6-4cba-8fd9-dfde6856955f/tus_zonas_erroneas_english_version.pdfIn PDF document text
    • https://064d663d-f6b2-44cf-a6ad-083da5f315e5.filesusr.com/ugd/77eba6_67d5bac99e124b58a898309b8333ea67.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/221698b1-e994-4a8e-b7fc-660f90f387ba/dixie_chopper_tires_near_me.pdfIn PDF document text
    • https://d3826037-6016-486c-99e9-dc41bc666644.filesusr.com/ugd/b81754_75b69906f82c4c938b910ca72a9ead7e.pdf?index=trueIn PDF document text
    • https://97d49ff2-d914-4ae4-8ac8-5e5cf5f77cad.filesusr.com/ugd/6350c7_5b836925ee5448f199d3432ad0c444bb.pdf?index=trueIn PDF document text
    • http://fikelamizogu.myartsonline.com/66_national_film_awards_2020.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_off0000cc14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC14 4832 bytes
SHA-256: d66e52cd408358c7df561655fc0f417b88dfc961314b61f8cde9fe69e9883830
font_01_sfnt_off0000dc70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC70 15360 bytes
SHA-256: a0c0d8b831bd9f3b50ee7fe0af0dde55ea75ca3863a4b91a16bf2cee74e95fa3