Malicious PDF — malware analysis report

Static analysis result for SHA-256 5292c21513b83638…

MALICIOUS

PDF

81.2 KB Created: 2021-03-31 12:32:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f02a6380858d4a9d49b355a0d864274b SHA-1: 1cee87fcb40b8a3f4e83dc4f7830add907becfbf SHA-256: 5292c21513b83638664390997febd5a0cb161f20c0d5c605c27b7b4a82fd96ba
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/award?keyword=augmented+reality+pdf PDF link annotation
    • https://nusoselif.weebly.com/uploads/1/3/4/4/134470887/kemedonabepeleno.pdfIn PDF document text
    • http://romeita.fun/mathematics_equationx6ygz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392854/normal_5fe15ba78f108.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408485/normal_60183694a2cff.pdfIn PDF document text
    • https://julalawigito.weebly.com/uploads/1/3/4/8/134869680/kerela.pdfIn PDF document text
    • http://moneyindia.site/jatosatodudigejijuwojmeu6s.pdfIn PDF document text
    • https://bivupexas.weebly.com/uploads/1/3/1/4/131453521/6110188.pdfIn PDF document text
    • http://zesamoa.online/toyota_echo_repair_manualndhsb.pdfIn PDF document text
    • http://xrootunited.com/the_grave_hoard_codedles7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470226/normal_603d6fefba0ed.pdfIn PDF document text
    • http://vuzuwul.getenjoyment.net/kikovupakemasidem.pdfIn PDF document text
    • http://katipef.medianewsonline.com/78752343720.pdfIn PDF document text
    • http://ig-copyrightnotice.com/the_apocrypha_bookshygte.pdfIn PDF document text
    • http://kaxavetaxudu.mywebcommunity.org/mad_cowboy.pdfIn PDF document text
    • https://cdn.sqhk.co/jekidase/NhjZib3/free_download_loud_ringtones_for_android_phones.pdfIn PDF document text
    • https://cdn.sqhk.co/famuxina/bZhdhc1/sogejezov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490736/normal_6056e0cfc822a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/synonyme_certifier_conforme.pdfIn PDF document text
    • http://bugenerefajujus.atwebpages.com/21159008165.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/congressional_research_service_reports.pdfIn PDF document text
    • http://wobanunep.myartsonline.com/bangla_song_lyrics_download.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 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_off0000ff8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF8D 5272 bytes
SHA-256: 5770479805d3a2677bd90df9fcea852f6db1c0e32f607053fbb5ba25581d897a
font_01_sfnt_off00011174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11174 11372 bytes
SHA-256: 8f1e629d503cdd3f9d3d5b5d37e2269ae6adab7fb0295192c7a3246f2be6a973

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