Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aeedac9db5c02d3…

MALICIOUS

PDF

82.3 KB Created: 2020-11-24 01:01:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: afb4678ac381daa71b1ccfdf4d986610 SHA-1: 18a8a391aafbf29aa6ad276e08d21484995dcc37 SHA-256: 1aeedac9db5c02d3ee5c0d5dbb28a16100ccd305bb9368be02b4bbd23f4ee7cd
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to 'traffset.ru', which is likely used to deliver a secondary payload or conduct phishing. The PDF structure and embedded content suggest it's designed to trick users into visiting this external resource.

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://traffset.ru/strik?utm_term=killing+rats+with+coke PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380082/normal_5fb2e3647bce0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459654/normal_5fa8c39c45e1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376857/normal_5f9e170fcf247.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/gupuso/wozavewufonam.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/skin_of_the_film_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/togazezaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8185c20b-ed03-4970-a096-d68f77c558f6/xupuzilanawiwodif.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/woolworths_personal_loan_online_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/87934705088.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fc0f714-54ed-4026-a8fb-a6ac23106cab/julius_caesar_act_5_study_questions_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/70144407350.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/sevexopif.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/torchlight_2_class_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/dalixavi.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/cpc_exam_prep_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3c3317a-df33-40bc-a351-b2866566aeb7/potential_transformer_testing_ppt.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_off00010499.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10499 5184 bytes
SHA-256: d5736658ab6f62edc8669ef1e189c05c294985e02500e3ff8de982ad75ae4581
font_01_sfnt_off0001164d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1164D 11728 bytes
SHA-256: cfb6df748001e2f856685bd6c4b6e7f41e7a1652fa86c8ee1265c5f30a597c8f

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