Malicious PDF — malware analysis report

Static analysis result for SHA-256 6471857f3730d391…

MALICIOUS

PDF

79.7 KB Created: 2021-03-23 11:35:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 597ae9334604755926ff147ca395a481 SHA-1: 1ad3b850f94c4cc67015275cd26c84cc146b4c66 SHA-256: 6471857f3730d391ba621370952a0f4d7159f8191b32992ddb9bbc2aef15697b
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were directly extracted, the PDF structure and external links point towards a common pattern of luring users to compromised or malicious web content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/123?utm_term=age+of+empires+3+mobile+apk PDF link annotation
    • http://bitjoms.xyz/how_to_clean_a_comet_torque_converterpkw5m.pdfIn PDF document text
    • http://fupemagis.mywebcommunity.org/importance_of_english_in_multilingual_society.pdfIn PDF document text
    • http://honey-love.ru/95349206556nk1tn.pdfIn PDF document text
    • http://difulomutanuv.iblogger.org/ganawoz.pdfIn PDF document text
    • http://stat-index-co.com/what_does_service_stabilitrak_mean_on_a_cadillact3o0l.pdfIn PDF document text
    • http://zawopim.mygamesonline.org/52068685920.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/cc30ea07-7637-40ed-bc2b-94d5a05b884b/62539072459.pdfIn PDF document text
    • https://18b09f4e-de4d-4c1b-9fe6-be55c63b1c00.filesusr.com/ugd/cd81e9_b55cc160af0a4c2d85b20d4a7fb49726.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b15cb62f-25cf-40b9-ab38-8db390c626d2/are_ceramic_heaters_safe_for_tents.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5a839c5-8814-4683-b773-d9673d5f29db/biology_chapter_13_assessment_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b4a018e-6d11-4dd7-8978-c5de5dd97cd1/mofexata.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ea8504d-2d91-4c7d-a4a0-50ea4571f583/descargar_el_secreto_ley_de_atraccin_documental_libro_completo_espaol.pdfIn PDF document text
    • http://kuwokezolofe.epizy.com/gupipazalopidixowarupi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/947a1122-3907-40f4-a4a6-8a22e1a25f35/40803684010.pdfIn PDF document text
    • https://e8ceee85-86bf-4804-80ab-d7a1511cbcf5.filesusr.com/ugd/38650a_0747db5b27cb46ffa01235a9eb3b7e62.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e59cd04-a246-4981-8c84-907612a4c84c/goresorosegilumar.pdfIn PDF document text
    • http://jefebewo.epizy.com/format_of_acknowledgement_receipt_of_documents.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a42194e3-e5d3-4b1b-8996-33b8b787ad13/a_clash_of_kings_illustrated_edition_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/989d6546-1416-4c65-ae45-53eea54d60ce/31106651058.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE647 5180 bytes
SHA-256: 06f6d7e12ccc1ec5970b1c6d6d1bbc48eb663a40a638d11b410d371b00b322da
font_01_sfnt_off0000f7e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E2 13744 bytes
SHA-256: c400a0a2780bff9873c95f01ce8b06d3a685b2e6f923b5734b71a27117ac91f3
font_02_sfnt_off000121fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121FB 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378