Malicious PDF — malware analysis report

Static analysis result for SHA-256 06e1e6c527949238…

MALICIOUS

PDF

82.1 KB Created: 2021-04-18 22:03:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 27ee1f8a580f8d804323a610f0660407 SHA-1: 7efd3295dfd1ce9f708db6b8190f7279eeb211af SHA-256: 06e1e6c527949238407ace2801a4a10fb5588c9b929148bb76a58f2a3d2a6a21
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 multiple heuristics and a machine learning classifier as malicious, specifically as a phishing attempt. It contains numerous links to external websites, many of which are hosted on disposable domains, suggesting an attempt to redirect users to malicious content. The primary URL, https://kuzutuzo.ru/strik, appears to be part of a lure related to online poker, likely a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://kuzutuzo.ru/strik?utm_term=how+to+play+cash+on+pokerstars PDF link annotation
    • https://vipuwajaziw.weebly.com/uploads/1/3/5/3/135398090/0485df22.pdfIn PDF document text
    • http://okstore.info/damufililidargr65z.pdfIn PDF document text
    • http://kalewolasufer.22web.org/misirebiwikapopev.pdfIn PDF document text
    • http://zubiki.top/how_to_write_a_job_description_letternvw05.pdfIn PDF document text
    • https://mupimafab.weebly.com/uploads/1/3/4/7/134728659/b2efb36f84acb75.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414871/normal_5fcc8da2819db.pdfIn PDF document text
    • http://constructionhouse.info/nexubobatepw5buu.pdfIn PDF document text
    • https://xosinalujejiwa.weebly.com/uploads/1/3/1/4/131405948/xuxogepi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475730/normal_602c9b4305576.pdfIn PDF document text
    • https://bakijowo.weebly.com/uploads/1/3/4/7/134726649/3397761.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469351/normal_601e84fb60538.pdfIn PDF document text
    • https://sutafosuteloxep.weebly.com/uploads/1/3/0/8/130814172/738370.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501656/normal_602b8c886bace.pdfIn PDF document text
    • http://strita.space/gamawinenavuruq5m8n.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/voxulija/theta_healing_nedir_nasl_uygulanr.pdfIn PDF document text
    • http://gelapuduwo.epizy.com/sally_s_phone_oxford_bookworms_starter.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/43030879798.pdfIn PDF document text
    • http://dozirojaj.rf.gd/nudav.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/xijefuvubixemigunikiwobe.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/tecknet_mechanical_keyboard_software.pdfIn PDF document text
    • http://reworowafuferax.rf.gd/brandon_sanderson_mistborn_book_1.pdfIn PDF document text
    • http://raseloxezonavo.epizy.com/kirchhoff_s_first_law.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF747 5240 bytes
SHA-256: 5420bbba83218f24696ad6e1213d2525256418c2472939b85c81030c370d8a70
font_01_sfnt_off0001091d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1091D 4284 bytes
SHA-256: fbc35ba324248e066c2b52aa0084c747bce8022bc0e83d17e4321eb4b6e4f173
font_02_sfnt_off000114a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114A4 11148 bytes
SHA-256: 40522852c5367f321c39b87a911d940437e77aa04049db5596a9927110dc1d2d

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