Malicious PDF — malware analysis report

Static analysis result for SHA-256 9148d7db459fc45d…

MALICIOUS

PDF

68.0 KB Created: 2020-11-18 07:40:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 7954f853bd9ac1076a521854074ca851 SHA-1: 22bfde2ba56a3a260c2e73fe67d0b53cec3835d3 SHA-256: 9148d7db459fc45dde4f06f1ca3f5bb7616a2504474bad2d420c722b380c6b4d
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a link to a known malicious redirector, which is designed to lead users to potentially harmful content. The embedded URL and the ClamAV detection strongly indicate a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and the malicious link suggest an attempt to exploit users through a deceptive lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/strik?utm_term=star+vs+the+forces+of+evil+full+series+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4501212/normal_5fafbe439bab0.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/sakaburepagase/notiwubilonodi.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/carillas_de_resina_indirectas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58fffd13-be4b-4be6-afd5-4e18bb2e6367/cretsiz_3d_izgi_film_indir.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/95504801417.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/pigewatobetezopewabuti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74a29a1b-cfa8-4a29-bb19-f13cdbeb449b/kisirodejepazobeveto.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/biology_words_a_z.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d76509b6-dc78-4007-8775-e864c2ce0e59/sejowepelagufedime.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c6788d5-c820-4d6d-a8fb-d520bb8ef70d/16634260178.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/dofekiludefezuma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8023495b-3da1-452a-8ab7-7b905264a195/hayabusa_service_manual_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97dbc158-2945-496d-a0fe-e7d9904f691a/80801287986.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b11ee670-e3d9-44d9-8d66-f85488d6f7cc/trial_of_wisdom_bfa.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/45118891649.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_off0000cc32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC32 5364 bytes
SHA-256: ade9f81eef486f4211564c1687d2f13143c2a99ade8cb43501a553eb9ae1e747
font_01_sfnt_off0000de84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE84 10884 bytes
SHA-256: bf9d3d0b3a36233f028e7a21a2b67e0795e81a528905a203cea21d74f135f1f2

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