Malicious PDF — malware analysis report

Static analysis result for SHA-256 47fb88e518769460…

MALICIOUS

PDF

82.9 KB Created: 2021-03-04 17:55:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b32029488134c08ced42c464f122e3a6 SHA-1: 5fbfd893f547e9fd9fcbf70b687500238f24d620 SHA-256: 47fb88e5187694603387c934289bc27eea5044d4ccb0ef1b0afcbf37a1d6b8e4
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, appears to be a lure related to 'History of western philosophy' to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/123?utm_term=history+of+western+philosophy PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4448347/normal_5fedcad2b5ad4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369917/normal_5fdddc555ad5f.pdfIn PDF document text
    • http://nakalabaxis.mywebcommunity.org/what_to_do_with_old_verizon_lg_flip_phone.pdfIn PDF document text
    • http://brosbass.com/24596496858vlw12.pdfIn PDF document text
    • http://spainwow.pro/anniversary_card_for_husband_templatepdc3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464871/normal_603c6bd81d528.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413866/normal_603eea38a80d3.pdfIn PDF document text
    • http://desajegurake.scienceontheweb.net/arifureta_shokugyou_de_sekai_saikyou_light_novel_volume_5_illustrations.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483338/normal_600ea39ad6385.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bemogabidemixu.epizy.com/tigigo.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/calories_in_fruits_and_vegetables_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/gofulineragixofawasejetu.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/bjcp_guidelines_new_england_ipa.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/add_and_subtract_fractions_worksheet_year_6.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/19819129004.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/call_of_duty_mobile_android_mod.pdfIn PDF document text
    • http://jonegukum.epizy.com/5528660571.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/xesivuxiw.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/53721826289.pdfIn PDF document text
    • http://xeravujowa.epizy.com/afloat_shopping_guide_2019.pdfIn PDF document text
    • http://tixofimisupabev.onlinewebshop.net/fdep_primary_and_secondary_drinking_water_standards.pdfIn PDF document text
    • http://fazovalekotevo.onlinewebshop.net/brs_physiology_7th_edition.pdfIn PDF document text
    • http://vebavibokifoko.epizy.com/program_management_summary_template.pdfIn PDF document text
    • http://sogivuwe.onlinewebshop.net/vusipokewur.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000108a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108A4 4936 bytes
SHA-256: 79e3efdfc80bb1419148597ef5045515174dba00427951fd4e4ccc867742dabd
font_01_sfnt_off00011982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11982 10816 bytes
SHA-256: 3c8909dad53cd047ac6258175f729e302da0d0dc0e52676e004a23adc00faa6b

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