Malicious PDF — malware analysis report

Static analysis result for SHA-256 033e1cde232b995d…

MALICIOUS

PDF

76.8 KB Created: 2021-02-13 17:48:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1aea95d50fe89b866d5fa7564be4dc81 SHA-1: 39ac18a165de23647cae5eb1152f8ce45f2ab0d9 SHA-256: 033e1cde232b995dd07dcc955e0e3f3051764737642e4d2a2520e5dc776ca393
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous external URIs, many hosted on disposable domains, suggesting a link farm or phishing attempt. The primary lure appears to be a fake search result for "what is facebook live", directing users to the malicious domain jacksth.ru. No scripts were extracted, but the PDF structure and URI patterns are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=what+is+facebook+live PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4488558/normal_5ffb23f22c8b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370059/normal_60146223e31e5.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/java_jre_8_update_181_64-_bit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377125/normal_6007535c090f6.pdfIn PDF document text
    • https://rixatesar.weebly.com/uploads/1/3/1/8/131871899/e01a620dd5418f.pdfIn PDF document text
    • http://kupivse.xyz/manual_usuario_contasol_2019eu9e5.pdfIn PDF document text
    • http://questotzvezd.space/4_pic_1_word_level_1293xw0ol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425772/normal_5ffb23808f569.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482403/normal_5fda6b967d705.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451565/normal_5fd3a6b7de3e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490364/normal_601e116239f6b.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/45114568175.pdfIn PDF document text
    • http://my-credit.info/guardian_tales_guide_world_2_hide_and_seekxapds.pdfIn PDF document text
    • https://cdn.sqhk.co/kuburarimoku/cLgfXhb/24228651938.pdfIn PDF document text
    • http://igcopyrightforhelps.com/bukegaja0ch9e.pdfIn PDF document text
    • https://cdn.sqhk.co/zifegowuf/lbHBjex/ping_pong_table_dimensions_and_clearance.pdfIn PDF document text
    • https://fapudajom.weebly.com/uploads/1/3/2/6/132681453/11e234cbb1588.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428043/normal_6025bb1be23bf.pdfIn PDF document text
    • http://honbiz.pro/akali_guide_jgs3rkh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F2 5148 bytes
SHA-256: 18e14434fef36748122e4c4bdcea0c5857651cab1b823cddae07e12697d5b665
font_01_sfnt_off0001028f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1028F 10440 bytes
SHA-256: 5f4b4fac65f64ce94a5ebeb215839163519afe0a8b33ddcf1d335709f95acebc

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