Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cdf324d3dd85d17…

MALICIOUS

PDF

72.9 KB Created: 2021-02-05 03:43:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: df8df8dd3502eea50623ef2e97c4ce97 SHA-1: 9f4bc33cbe97b7b2055cffb1b2cc96ba4bfde2fc SHA-256: 0cdf324d3dd85d176e8f054463afc206c900a6de4f0c4f3908323e1678b9d64a
156 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 as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of a large number of external links, including a 'link farm' heuristic, suggests an attempt to redirect users to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://maypoin.ru/123?utm_term=gear+vr+controller+apk PDF link annotation
    • https://faxezufag.weebly.com/uploads/1/3/0/8/130874059/nowuke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403824/normal_600bb5eecc982.pdfIn PDF document text
    • https://vokewubepil.weebly.com/uploads/1/3/4/4/134443825/wijadurogobesig.pdfIn PDF document text
    • https://jedexapotup.weebly.com/uploads/1/3/4/4/134472831/tigeji.pdfIn PDF document text
    • https://sutulozutujak.weebly.com/uploads/1/3/4/8/134884412/d4b859c2a168e0.pdfIn PDF document text
    • https://xetamoro.weebly.com/uploads/1/3/2/8/132815737/4225213.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376599/normal_600e21e139a98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462056/normal_5fda479ded093.pdfIn PDF document text
    • http://guvinesusavilo.iblogger.org/chronotherm_iv_plus_thermostat_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368781/normal_601b4b4134ec3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sosasofojatage.epizy.com/73334789702.pdfIn PDF document text
    • http://kepatuzazavew.epizy.com/excel_dashboard_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/dopeza.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/chale_aana_pagalworld._io.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/ddos_protection_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/spanish_classroom_objects.pdfIn PDF document text
    • http://sazerubewufuzuk.epizy.com/36622533111.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/school_schedule_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/dmt_trip_reports_entities.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/6504753898.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_off0000df3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3A 4904 bytes
SHA-256: 87679bdc207b0fb1838ccd6ed819b5edb81604217b0fbae2e842d455d598881d
font_01_sfnt_off0000f006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF006 11332 bytes
SHA-256: fc5bfb0375e94f08f724cc4c2172828125c2a4b7bf5a3a38227bf0f1d8daf831

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