Malicious PDF — malware analysis report

Static analysis result for SHA-256 40d9aa2f68de8c01…

MALICIOUS

PDF

85.5 KB Created: 2021-03-22 10:33:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: b944fa2e0718f481dcbb278c12c07df7 SHA-1: fe3ade607c0cd0da4130da7545e9bb7c88701b4d SHA-256: 40d9aa2f68de8c0130555769923b6d1d89e39dc6e242dfe694f88e12103e411c
126 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan distribution attempt. The document body, though heavily obfuscated, contains a lure related to 'Hart of Dixie episode guide season 5', directing users to external URLs. The presence of numerous external links, including suspicious domains like 'ponafet.ru' and 'devicesprotectionforusers.site', strongly suggests a phishing or malware distribution scheme.

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://ponafet.ru/123?utm_term=hart+of+dixie+episode+guide+season+5 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369783/normal_6033a35d245c4.pdfIn PDF document text
    • http://devicesprotectionforusers.site/guzirtgqeh.pdfIn PDF document text
    • http://penafur.scienceontheweb.net/francis_bacon_essays_of_studies.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445888/normal_602ea945d27de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478688/normal_600c6ef641f97.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486778/normal_5ff1adf68d356.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425919/normal_6043e57de8880.pdfIn PDF document text
    • https://tadomowiwelam.weebly.com/uploads/1/3/4/7/134744739/8238910.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418385/normal_5fe18d098b285.pdfIn PDF document text
    • https://jewelilug.weebly.com/uploads/1/3/4/3/134331877/latenebareririr.pdfIn PDF document text
    • http://instas.site/benibilisaxyk42f.pdfIn PDF document text
    • https://zavetogodafewer.weebly.com/uploads/1/3/4/7/134709275/wuvapuxo.pdfIn PDF document text
    • https://wanojotuza.weebly.com/uploads/1/3/5/3/135346096/9653575.pdfIn PDF document text
    • https://jajonugofetafis.weebly.com/uploads/1/3/0/7/130776034/d1b08.pdfIn PDF document text
    • http://digitalcalakk1.xyz/meliwijifi6ewsy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/student_attendance_management_system_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/what_is_the_name_of_simbas_kid.pdfIn PDF document text
    • http://kemesid.onlinewebshop.net/jspdf_autotable_multiple_headers.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/rijufesugulosoriboti.pdfIn PDF document text
    • http://nosigegu.onlinewebshop.net/building_blueprint_symbols.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/what_bird_of_prey_has_yellow_legs.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/patriarcas_y_profetas_para_descargar.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f73a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF73A 5328 bytes
SHA-256: 8a6b0e92da9071373d042b423bd184069db3548edb41f0182c152a9113870c7a
font_01_sfnt_off00010973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10973 11496 bytes
SHA-256: 650c4f02698ad9e47f671735ef9c5acdf30258079f870df2737b94cf23918975
font_02_sfnt_off0001309f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1309F 17484 bytes
SHA-256: ff80b801dafac7c72ec8756d643d63f0f4546c249a5eaacdb0e944e79493a781

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