Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ea2606a03a186df…

MALICIOUS

PDF

230.2 KB Created: 2021-01-02 13:48:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 45c95e6d38e5b437a6ed26b95655a6a0 SHA-1: 9fd420f4d56825f9f8a632dca3e228e3bee3bb01 SHA-256: 4ea2606a03a186df2fa405037abb70ab9b74f233070f922b2a01a0aed4f5d6dd
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL, https://traffine.ru/aws?utm_term=books+for+7th+grade+book+reports, is likely used to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'books for 7th grade book reports'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://traffine.ru/aws?utm_term=books+for+7th+grade+book+reports PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412379/normal_5fada9b1d6540.pdfIn PDF document text
    • https://numilobes.weebly.com/uploads/1/3/4/2/134235742/e19733.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383800/normal_5f8be7f24999e.pdfIn PDF document text
    • https://kuvanipugeva.weebly.com/uploads/1/3/4/4/134445248/fetisefar-nunik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469860/normal_5fe148c626fe9.pdfIn PDF document text
    • https://titawijuneve.weebly.com/uploads/1/3/4/0/134012454/5054877.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377678/normal_5f98c85aa1d5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460043/normal_5fe6ca61ca1d2.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/zesukufodak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379848/normal_5fc18a593487f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/14ab27db-3fbf-4dce-aca6-f30f9c28086e/fexifazikebefuzuneb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a2d3eeb-547a-4ebd-a492-624c18b02258/royal_farms_spicy_chicken_tenders.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49d466f8-0b32-4037-b21b-e9c830078e05/medical_microbiology_4th_edition_free_download.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off000346b1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x346B1 31664 bytes
SHA-256: 28f40d2b16b2ec57b0ff09ed2143592b3890d3a6a92d3569ef3cd915d2ec2ed3
font_00_sfnt_off00030f65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F65 5236 bytes
SHA-256: 77be34e6695b3fda13f28081da1b6e679d752ee952119ea40835952f2b543457
font_01_sfnt_off00032144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32144 11080 bytes
SHA-256: 2f853bf17fbe4a0d2e030e95e51f2916eef3424e635ea75bcbbd921a919445a3
font_03_sfnt_off00037cbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37CBB 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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