Malicious PDF — malware analysis report

Static analysis result for SHA-256 17c20687fe9b53c0…

MALICIOUS

PDF

72.7 KB Created: 2021-03-17 05:14:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 68bc6dc975db5893d378af18ed2262e6 SHA-1: b63cfd2938a40a0bb1c2f8cea762db06e6611e1b SHA-256: 17c20687fe9b53c02ab50a72a7d55e3344f6b1d4a5bec6d1c529b1a13fd11cb4
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 flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to 'golowaki.ru' which is likely part of a phishing or malware distribution scheme. The PDF structure and embedded content suggest it's designed to exploit users by masquerading as legitimate content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://golowaki.ru/123?utm_term=triangle+interior+angle+sum+theorem+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4427504/normal_600e024de2208.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495039/normal_6041c5cf5ee2d.pdfIn PDF document text
    • https://xamezorunag.weebly.com/uploads/1/3/1/6/131606231/4b5af3.pdfIn PDF document text
    • http://tikonazab.iblogger.org/how_to_read_court_case_numbers_washington_state.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450351/normal_5fe843832609f.pdfIn PDF document text
    • http://bewujasixi.mywebcommunity.org/85535630584.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403407/normal_5fd728445531c.pdfIn PDF document text
    • http://xepidenad.scienceontheweb.net/news_report_examples_ks2.pdfIn PDF document text
    • http://rapoxarawiwalo.sportsontheweb.net/paradise_lost_book_10.pdfIn PDF document text
    • http://tekesonisopo.22web.org/modern_certificate_template_editable.pdfIn PDF document text
    • http://vowubomirasupem.22web.org/wearable_king_crown_template.pdfIn PDF document text
    • https://pajixuga.weebly.com/uploads/1/3/2/3/132303126/054e400ecebbd.pdfIn PDF document text
    • http://kilabisito.iblogger.org/61881126814.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wexugemo.epizy.com/47253748732.pdfIn PDF document text
    • http://kujazidi.epizy.com/38045320675.pdfIn PDF document text
    • http://bamanitetazokav.rf.gd/72557364411.pdfIn PDF document text
    • http://duvodix.myartsonline.com/dyson_vacuum_dc50_troubleshooting.pdfIn PDF document text
    • http://siniligavaxuvul.onlinewebshop.net/free_ebook_reader_for_windows.pdfIn PDF document text
    • http://jetetejev.rf.gd/11769016146.pdfIn PDF document text
    • http://vuzinibijabu.rf.gd/beiman_priya_all_song.pdfIn PDF document text
    • http://tuvalej.epizy.com/90649565712.pdfIn PDF document text
    • http://dejamatokato.rf.gd/73183193810.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

Related samples 7

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_off0000de30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE30 5204 bytes
SHA-256: 3fc37c10c02c4e5bafba5f71a1311bad07ea427fe92e19a791ebfbbc94ea3403
font_01_sfnt_off0000efc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC9 10388 bytes
SHA-256: 0719b6dc31188532d6625ab6e429bca58a56d1ec1c88fc7dea3b7527b3abaf9e

Open this report in the interactive analyzer, or submit your own file for analysis.