Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9242d68917ba896…

MALICIOUS

PDF

68.9 KB Created: 2021-02-24 12:50:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 42aba18f79fb1577afd51dcb8a18dec0 SHA-1: 29fe7d4bc21e794d460e9669e5e15867bfa07b58 SHA-256: f9242d68917ba8963b0fc55f0b3255e689e86e7010855ffa23090d2d15395452
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'seumenha.ru', which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, suggests a lure related to beauty products, aligning with common phishing tactics.

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://seumenha.ru/123?utm_term=create+your+own+beauty+line PDF link annotation
    • http://worldthailand.fun/300635822957z0jj.pdfIn PDF document text
    • http://abzac.me/28154861711x5l76.pdfIn PDF document text
    • https://cdn.sqhk.co/lexelinowe/hiehije/40670078559.pdfIn PDF document text
    • https://cdn.sqhk.co/lutaxudepoje/hchjgdr/jizibividatadi.pdfIn PDF document text
    • https://cdn.sqhk.co/linidivez/dfjfpsg/jolazewojidavivixoboker.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368501/normal_602de25c4c191.pdfIn PDF document text
    • http://meetlait.pro/fudegixurulumajozizigujiroible.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443342/normal_6026e7c4d002e.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/tibitexil/google_docs_employment_application_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/piridotixeluwa.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/25268824505.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/electron_configuration_and_orbital_notation_worksheet_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/lerijupudogidoturu.pdfIn PDF document text
    • https://s3.amazonaws.com/sefipa/seborrhoeic_dermatitis_treatment_guidelines.pdfIn PDF document text
    • http://tepokubomime.rf.gd/46502224465.pdfIn PDF document text
    • http://piwakolipa.rf.gd/newton_s_second_law_experiment_lab_report.pdfIn PDF document text
    • http://jekutekovemimav.rf.gd/59966074757.pdfIn PDF document text
    • http://zomimek.epizy.com/7582139425.pdfIn PDF document text
    • http://tereralubo.epizy.com/blackfin_walkie_talkie_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/16547752583.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_off0000d2af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2AF 4740 bytes
SHA-256: 64fee4ed4aa33235e362d7df7112c9e3efb75d54fb1d9a960277460444216c0e
font_01_sfnt_off0000e2ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EF 10296 bytes
SHA-256: 98bceb9787096c01cd6e4be94ffb34d41a5154cf360e644256e40f22cf86eb5b

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