Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac23f879d3853418…

MALICIOUS

PDF

87.0 KB Created: 2021-03-18 11:48:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 96eb5038c079526c17084c2de3019d55 SHA-1: 4322050c719855dd3357e6111411cf09dab8f545 SHA-256: ac23f879d3853418cb733314ea240c7608de521173cd20db594bfad6aff48c73
96 Risk Score

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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/wix?keyword=fha+streamline+max+loan+amount+worksheet+2017 PDF link annotation
    • http://kagaromorin.medianewsonline.com/49188961439.pdfIn PDF document text
    • http://dikagowoxi.sportsontheweb.net/36978864497.pdfIn PDF document text
    • http://fujigukatujewu.medianewsonline.com/nepebikobu.pdfIn PDF document text
    • http://goxivomibivufuv.mywebcommunity.org/les_neurones_definition.pdfIn PDF document text
    • http://pupunorip.getenjoyment.net/viralaren.pdfIn PDF document text
    • http://tegotapiw.scienceontheweb.net/sudib.pdfIn PDF document text
    • http://kutatit.getenjoyment.net/96476427168.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nigukeja.epizy.com/guidestar_nonprofit_report.pdfIn PDF document text
    • http://gofozumi.epizy.com/pretty_little_liars_season_1_episode_3_free.pdfIn PDF document text
    • http://pimobepetokonud.myartsonline.com/jisoxokufo.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/computer_organization_and_design_mips_edition_5th_edition_patterson_solutions_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tumuzu/3315656217.pdfIn PDF document text
    • http://lumosaneja.onlinewebshop.net/anganwadi_helper_form.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/53424483225.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/xibogimu.pdfIn PDF document text
    • http://dapizodipe.myartsonline.com/89757636006.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/united_states_army_corps_of_engineers_campgrounds.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/how_much_does_a_salt_water_pool_pump_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/free_pop_piano_music_sheets_printable.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_off00011537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11537 5508 bytes
SHA-256: 24ee1c57fae45eef6d12abfb45e0ffb7e5667ee932ca8052db38e4bb671dabe3
font_01_sfnt_off000127ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127EA 11472 bytes
SHA-256: 897796e85ff646b8dca1287f8edae51dea9db474182ed46b9efb46a815861747

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