Malicious PDF — malware analysis report

Static analysis result for SHA-256 75c71c395241b964…

MALICIOUS

PDF

72.2 KB Created: 2021-02-24 14:45:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: e6090e538a45318b1c0aa1be36ee879f SHA-1: 020afd3ce86bbc520f8d7714bfb74087fb776a4b SHA-256: 75c71c395241b964df44f723d72475db0933f8c7a2703ea89f7c8a6f93d1704e
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded links, with at least one identified as a redirector to known malicious infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the presence of malicious links is sufficient evidence for the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/strik?utm_term=how+to+install+mtx+subs In PDF document text
    • http://latencfsrt.space/18556222556xu54e.pdfIn PDF document text
    • http://waxokuvinati.iblogger.org/peaky_blinders_season_1_index.pdfIn PDF document text
    • https://tegupovo.weebly.com/uploads/1/3/0/7/130775278/8430991.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465538/normal_5fd0a96d4bf38.pdfIn PDF document text
    • https://fumozowafujazuv.weebly.com/uploads/1/3/5/3/135331302/pazuteraful.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446494/normal_5feb350aa647b.pdfIn PDF document text
    • http://wiwajaluje.iblogger.org/65525362275.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491159/normal_6020c4d95900f.pdfIn PDF document text
    • https://cdn.sqhk.co/jarixizotib/eyhcacB/launchpad_brevard_schools.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457561/normal_5ff171c7616d1.pdfIn PDF document text
    • https://kilekefaze.weebly.com/uploads/1/3/4/6/134631798/18b27909f16.pdfIn PDF document text
    • http://jewuzalozegeso.iblogger.org/tajuvuj.pdfIn PDF document text
    • http://peludofnor.fun/pdf_to_word_converter_online_2pdfszfr3.pdfIn PDF document text
    • https://fizinizaboz.weebly.com/uploads/1/3/5/3/135304720/8643074.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://numowun.rf.gd/95361572587.pdfIn PDF document text
    • http://lebubenopi.rf.gd/80444245517.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_off0000dbcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCF 4996 bytes
SHA-256: d148412a7e75b957bed457e31ba754c5b0a6f09eaf0bd4668a26640ec107a1e0
font_01_sfnt_off0000ecce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECCE 11052 bytes
SHA-256: af007503c2d370bc9f534ec5ec7e66ec6a5455c41c648d6167f1f4bc08f848e7

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