Malicious PDF — malware analysis report

Static analysis result for SHA-256 46214ff2c27757c6…

MALICIOUS

PDF

74.4 KB Created: 2021-03-20 10:21:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b2030e33e655827e914b65db6f361a4f SHA-1: 14bfc0ef53be0d945edab298ebcd869f862f7899 SHA-256: 46214ff2c27757c67d514707a2e277f1f6b84dc04f3c77330673c2ac00f950a3
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/strik?utm_term=social+finance+uk+salary PDF link annotation
    • https://duxizesojisuvab.weebly.com/uploads/1/3/5/3/135327590/9441163.pdfIn PDF document text
    • https://kominalekawer.weebly.com/uploads/1/3/1/6/131636772/911750.pdfIn PDF document text
    • http://lemafesopeposuz.mywebcommunity.org/sesobul.pdfIn PDF document text
    • https://pubedazemel.weebly.com/uploads/1/3/4/8/134870130/1be8ed1b82061.pdfIn PDF document text
    • https://vowizata.weebly.com/uploads/1/3/1/8/131856430/sisusapuf-jiforit-legufimuvepira.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403410/normal_6019a2791041e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464524/normal_5fe1a2bceff80.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463559/normal_5fe569b86b9c8.pdfIn PDF document text
    • http://wupevijijoze.mygamesonline.org/geval.pdfIn PDF document text
    • https://kodugeji.weebly.com/uploads/1/3/6/0/136089350/jerul.pdfIn PDF document text
    • https://lomivurusizova.weebly.com/uploads/1/3/4/8/134868764/378235.pdfIn PDF document text
    • https://ragesetenavuxom.weebly.com/uploads/1/3/1/6/131606186/mufowit.pdfIn PDF document text
    • https://gileledera.weebly.com/uploads/1/3/0/8/130874536/6495019.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/zevutebulaworel/antivirus_for_windows_xp.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/zozibekewewipukozive.pdfIn PDF document text
    • http://tijunejo.epizy.com/ethiopian_reporter_amharic_version.pdfIn PDF document text
    • http://gonesipida.epizy.com/bopenuxabosogixevetadib.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/kali_linux_hacking_tutorials.pdfIn PDF document text
    • http://ninamutarat.epizy.com/tofobejuzivivunugozineliw.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/74479732117.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_off0000e487.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE487 5144 bytes
SHA-256: 033b17ccba72e662bab0c81266ce8c87b96c0609b99eb15f4a1a37f8da812785
font_01_sfnt_off0000f627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF627 11084 bytes
SHA-256: 8662545c4a60c2d7ec1fe736730e98f1434d9b2ec41deddd9efa87a3124bb1df

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