Malicious PDF — malware analysis report

Static analysis result for SHA-256 97a63eee50909554…

MALICIOUS

PDF

72.1 KB Created: 2021-03-31 23:32:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 8afed9a8e97e3aa7d6344658080de706 SHA-1: ef9a660d9f626ffe3c650c67efab00260112e6a2 SHA-256: 97a63eee50909554f97b5a862016d3ce3691c2a57e5f7a84dccc2d741358ae2d
126 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to a domain that appears to be part of a link farm designed to redirect users. The document body, though heavily obfuscated, contains text related to the embedded URL, suggesting a lure for phishing or malware delivery.

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://maypoin.ru/award?keyword=ambiguity+aversion+and+comparative+ignorance+pdf PDF link annotation
    • http://jolixasij.sportsontheweb.net/78394541764.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489843/normal_6017def364724.pdfIn PDF document text
    • http://povisowalikim.scienceontheweb.net/dewalt_miter_saw_12_inch_manual.pdfIn PDF document text
    • http://waralolojogeta.sportsontheweb.net/catering_service_project_report.pdfIn PDF document text
    • http://damewumesigalut.medianewsonline.com/15912547190.pdfIn PDF document text
    • http://delinapod.mypressonline.com/25711737191.pdfIn PDF document text
    • http://kubosikavudux.mygamesonline.org/miwinabitojajaliwejufi.pdfIn PDF document text
    • http://lilubaxubaxulu.sportsontheweb.net/49203179618.pdfIn PDF document text
    • https://cdn.sqhk.co/tamejenonisi/Uhgiiib/disney_costumes_for_adults_walmart.pdfIn PDF document text
    • http://gidonuvawugirid.medianewsonline.com/addition_subtraction_multiplication_and_division.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459787/normal_5ff08ecbb3c6c.pdfIn PDF document text
    • http://gixitetopes.scienceontheweb.net/pagexudi.pdfIn PDF document text
    • https://cdn.sqhk.co/sipobufiw/iaMfWGK/mazozikafer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473616/normal_5fe56fd18ae5e.pdfIn PDF document text
    • https://cdn.sqhk.co/zowesifona/gjbhiiW/spectacular_pretty_ricky_wife.pdfIn PDF document text
    • http://biwumani.mywebcommunity.org/husqvarna_rz4623_wiring_schematic.pdfIn PDF document text
    • https://cdn.sqhk.co/piwoputi/qwXVgcj/red_robin_nutrition_carbs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fejonaxi.myartsonline.com/338205159.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/live_crime_reports_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/rizovutuguwo.pdfIn PDF document text
    • http://doriponesarom.myartsonline.com/32938423635.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/factors_affecting_adsorption_process.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_off0000da48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA48 5736 bytes
SHA-256: c3b203849aa0cffb90c0b512e33edeb0d1dabaafdeae530db4159bdbde5e782b
font_01_sfnt_off0000edcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCB 10920 bytes
SHA-256: ad1364ffb0758885c7273b5ab8c1639b157c14115060103d801343b16d77fa3b

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