Malicious PDF — malware analysis report

Static analysis result for SHA-256 b70ef0eed15027f7…

MALICIOUS

PDF

63.4 KB Created: 2020-11-25 04:02:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3a8b49a4e2fee66100268f88aa8f3380 SHA-1: 4d6251226ad656c3388f2e74a375213c054002bb SHA-256: b70ef0eed15027f7c70bb72286e0c49a53336d65f70803cc2b235b80cf0f499b
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://trafftec.ru/strik?utm_term=frederick+cecil+mclean PDF link annotation
    • https://tuxibefogeja.weebly.com/uploads/1/3/4/3/134359070/wodasifav.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/1183494.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404983/normal_5f9d288b6238a.pdfIn PDF document text
    • https://maviruwatibifiw.weebly.com/uploads/1/3/4/4/134490209/211bb0d3778761.pdfIn PDF document text
    • https://lugilabujenubo.weebly.com/uploads/1/3/4/3/134320616/f45e21e.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/webipejonavuv/identities_short_story_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25a8ad21-b31c-414d-bbc3-0ecaa3723beb/wish_promo_codes_for_existing_customers_2020_free_shipping.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5232626-7fec-4297-b84f-22dc3e95b227/65909966551.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e74783ef-847b-42e9-afa4-adfaaebcc3b3/clasificacion_de_antibioticos_por_familias.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cda19586-ca0b-4f9b-8c9f-726cb95410c7/39133108826.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1038a52e-9901-49ea-8ad8-f751c1475a7e/budabuxufanetesitanot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3040b8b4-e536-4fdc-b8e2-59049cbae98e/10854200820.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f845175-b1ce-4b67-ae0c-e45820675e31/cheetah_slide_rite_bags.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/biografia_de_cesare_lombroso.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_off0000bdd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDD7 4924 bytes
SHA-256: 32694a0bee15e454b168ace3fbd7460be09e6a39aac9ac825a00fb593ceb4da1
font_01_sfnt_off0000ce82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE82 10140 bytes
SHA-256: faf8fd04066c87afce7eb7b5d123fc7b5bd61e1a793ebbe27d4593c880b30a80

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