Malicious PDF — malware analysis report

Static analysis result for SHA-256 490fe45dcbafcd6d…

MALICIOUS

PDF

66.1 KB Created: 2021-03-29 09:41:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a1103166d0a1ca9f5aa868cf4f9b2f67 SHA-1: 9c66778ce9d6c61c20351015ad949dde5a645ca7 SHA-256: 490fe45dcbafcd6d5cce43d3790913ace31b6dd8bd26ac00b7d36234eb6bce2b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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-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://fokemale.ru/wix?keyword=factors+affecting+climate+worksheet+doc PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4447497/normal_5ffad277020d3.pdfIn PDF document text
    • http://nuzidixiwetor.22web.org/xamixu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403120/normal_5fd61d2fc2f3b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vugurajuv.epizy.com/6054975160.pdfIn PDF document text
    • http://pikexiwa.epizy.com/elements_of_photogrammetry_wolf.pdfIn PDF document text
    • http://fonimegalidoxu.epizy.com/free_ebook_templates_indesign.pdfIn PDF document text
    • http://kawojimulogizef.rf.gd/81205792768.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/wukurax.pdfIn PDF document text
    • http://xotivigafutuzul.epizy.com/articulos_de_caries_en_nios.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/67820069992.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/9702445196.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/jorureduvavupevelarudifi.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/dir-615_default_password_reset.pdfIn PDF document text
    • http://lanekozelibafu.rf.gd/probability_distribution_problems.pdfIn PDF document text
    • http://xitufadaxavak.epizy.com/68402846640.pdfIn PDF document text
    • http://losotejusegiso.rf.gd/mesotelioma_abdominal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bec35930-26e9-465e-b690-eb0bebb81ef7/jatodijerejabuvos.pdfIn PDF document text
    • http://polutojufet.epizy.com/jevtana_package_insert.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/82411573794.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5a1a9c7-e6bc-4b0a-b0fc-b4f4dc7b0f5c/70452890389.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_off0000c358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC358 5548 bytes
SHA-256: b627adce3770331b61756e72be9f923eadaad34cd26a5f638ba2ee375ec2b8e0
font_01_sfnt_off0000d61e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD61E 10720 bytes
SHA-256: 10877d97379ccffd738e1e05cd5c0ce2055c9b069b01348d2155aba41b5a31d3

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