Malicious PDF — malware analysis report

Static analysis result for SHA-256 706a9a802bdacaf2…

MALICIOUS

PDF

81.3 KB Created: 2021-03-24 23:43:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8d5866d97002c634f0390cb40da285a5 SHA-1: d6d3b0543fde22b533186a49bf72112b98337264 SHA-256: 706a9a802bdacaf2ebc328e833948a0d7b6a6714fa91ee2b7b8547ad424c8b11
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 0.9964

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/strik?utm_term=karcher+pressure+washer+hose+diameter PDF link annotation
    • http://naliputa.mywebcommunity.org/21544602572.pdfIn PDF document text
    • http://davorivugexawu.sportsontheweb.net/garmin_dash_cam_55_price_south_africa.pdfIn PDF document text
    • http://mikazuxo.mypressonline.com/gogojidosigesib.pdfIn PDF document text
    • http://xolokeminapi.getenjoyment.net/vabolimazovasiviwuwaze.pdfIn PDF document text
    • http://lamisorosasam.mywebcommunity.org/39461200972.pdfIn PDF document text
    • http://setakini.22web.org/38935833523.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nafaradevofipaf.myartsonline.com/free_loft_bed_plans.pdfIn PDF document text
    • http://wozaloruwogilo.rf.gd/rumefobime.pdfIn PDF document text
    • http://zimopup.myartsonline.com/tiwetivanutiw.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/zopunaxekelopi.pdfIn PDF document text
    • http://fopekexu.epizy.com/cucumber_plantation_guide_in_the_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/xasizubuxozedosuvaku.pdfIn PDF document text
    • http://vekujekodabudu.epizy.com/huskers_martinez_injury_report.pdfIn PDF document text
    • http://femiworuw.rf.gd/agatha_christie_biography.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/400d3cbb-5691-410c-bbf3-d5f6860f1226/32514077660.pdfIn PDF document text
    • http://mawidinivetobi.myartsonline.com/lozorukuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69965bb9-7342-48e3-ace4-6dc17b858a79/bose_wave_radio_ii.pdfIn PDF document text
    • http://wefexafunedex.epizy.com/pakolipumavimavug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93443746-17b5-48c1-b88d-dd5ee8aef36e/2619825440.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/508a0340-7b37-45a2-b774-536834925498/how_many_questions_are_on_the_texas_master_electrician_exam.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/63695275872.pdfIn PDF document text
    • http://zusotofamagukam.rf.gd/2010_chevy_malibu_brake_lights_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bcbaf8e-26b9-4a6a-b536-211c7828e23b/nidodulutabusaw.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/kibakonifikujum.pdfIn PDF document text
    • http://medetoti.epizy.com/baskerville_font_family.pdfIn PDF document text
    • http://zetulinug.rf.gd/10384926322.pdfIn PDF document text
    • http://mikijelirisu.epizy.com/all_in_one_accountancy_class_11_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/827100243.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_off00010015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10015 5340 bytes
SHA-256: dd3b40ab97fd51892cdb360363ffc8bc415a1e16e8271808ea044decaa9eaeaa
font_01_sfnt_off00011229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11229 11124 bytes
SHA-256: b2d2e33f38da4fb82a8656fc975a57115ac016f450930ecdfa365f7c860bd04a

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