Malicious PDF — malware analysis report

Static analysis result for SHA-256 0874b667682769b0…

MALICIOUS

PDF

74.0 KB Created: 2020-12-24 07:00:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3ef43ce356e988b5fc822fe4ea5f8a58 SHA-1: ed6f93266af9fbd6bc3808e168256c9a37288a6a SHA-256: 0874b667682769b08f2f0d160b52db9b6ecffb2a5cbb6293cf94630b62523fcb
96 Risk Score

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 URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users through social engineering, likely as a phishing lure.

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/123?utm_term=instant+pot+steamer+basket+substitute PDF link annotation
    • https://cdn.sqhk.co/zuvutose/b7jjAjc/pigivajawix.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368952/normal_5fc49288b4f88.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450512/normal_5fce936b0423e.pdfIn PDF document text
    • https://cdn.sqhk.co/kefexunas/liaZgeL/cute_backgrounds_of_baby_yoda.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe75cb58-e3dd-4d4a-92e6-35bfc773c966/komulunenasuduvod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adbee2b9-a040-454c-a40c-5b2d7fff9625/37414002277.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/261d4b8e-0d5e-4108-8ea3-254f249dc732/carlisle_elementary_school_boiling_springs_sc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39fe5b02-bcac-4655-8a23-b92b07ad6187/xegopasarukawizojitixu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5174aaf8-6656-45fe-8d29-6ed83d115af5/return_man_100.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c899550c-81f7-4fbf-80e3-3a4830476dfa/penakopo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f103fca-364f-4b2e-a2c6-ce2c71c035f3/recettes_avec_saucisse_huachana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1245d76-5883-4ee0-9631-6a18b6cfaa56/fofarirenetejejifatipuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ec526e8-9af5-4317-86dd-1648b5de387e/pusojodakurebutepa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf94390f-2941-4545-9eac-1e4a4342a7aa/tojizofomikun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49061ef7-d6fa-4b3f-b7ed-efd3d396f2d0/gidivo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e5624a1-b9d2-454c-a1a2-5392526996ce/when_the_company_assigns_factory_labor_costs_to_jobs.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_off0000e1f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F2 5072 bytes
SHA-256: 9c0b350948b58342b012fd27198688af76fb1c5dfe225465a7607eb9411cf474
font_01_sfnt_off0000f319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF319 11892 bytes
SHA-256: 20c795efc5d0c128a9ca084a440457721c5a9f74e45b3945f8f8b88079609816

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