Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb75190d1409c242…

MALICIOUS

PDF

79.5 KB Created: 2021-03-27 22:09:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 37174c700a09c232cfb58f931ea8ef51 SHA-1: 7ce87c11ad7f06f6f7e413be141fbf25979053a3 SHA-256: eb75190d1409c2420bd23c9c8b34eb440c136f6e31a0a8954bcbf1ab64eba765
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://crophysi.ru/123?utm_term=sports+liability+waiver+template PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412174/normal_60549e1ea2c7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450147/normal_601d2cdf14d44.pdfIn PDF document text
    • http://newuwedeza.mypressonline.com/xevefokiborog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498645/normal_603ff294b526f.pdfIn PDF document text
    • http://texegevesimiruv.22web.org/medabavuzoraka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383807/normal_603d047c0b79d.pdfIn PDF document text
    • http://geparup.scienceontheweb.net/46667695408.pdfIn PDF document text
    • http://digovin.getenjoyment.net/30094407364.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459624/normal_6056486eb9266.pdfIn PDF document text
    • http://duribil.iblogger.org/flames_of_war_rules.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368954/normal_5fe24f9ec9a48.pdfIn PDF document text
    • http://toxipoxekej.medianewsonline.com/28808261595.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365639/normal_60011a24ea94d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377101/normal_5ff508e67e5ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404123/normal_5fe429e7d9892.pdfIn PDF document text
    • http://noxesim.iblogger.org/how_to_turn_on_adt_safewatch_pro_3000.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404503/normal_600d61838cea3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://suvowafavij.epizy.com/1936572450.pdfIn PDF document text
    • http://kalotiwinilobiw.epizy.com/51779014179.pdfIn PDF document text
    • http://vevodulezetom.rf.gd/wosegekujukulawovax.pdfIn PDF document text
    • http://kizozipa.epizy.com/how_many_chapters_harry_potter_2.pdfIn PDF document text
    • http://mezubivedoxida.epizy.com/wap_in_teri_meri_kahani.pdfIn PDF document text
    • http://kesinusaxaduveg.epizy.com/what_is_terms_of_reference.pdfIn PDF document text
    • http://revenunazikun.rf.gd/joint_health_command_annual_report.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_off0000f97e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF97E 5464 bytes
SHA-256: 666cb1fdcda0ea89f229f2fd40405d30d4aaa41337fd32940ada08ddac8c8deb
font_01_sfnt_off00010c0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C0F 10648 bytes
SHA-256: 65b80de014723f3272f1ee326bcf222e2a3f4aabf96a1fcc2547cf41abeaa878

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