Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7e132b0500526af…

MALICIOUS

PDF

96.1 KB Created: 2021-03-20 13:08:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: bacf7e00b153461f7a8d7f4c2f87d9c3 SHA-1: a97782e14499d6afdbbef1c0eb0f4d6018f61edf SHA-256: d7e132b0500526af7da076566869c699c0241a25d1804c197d721dfaa8ccaf60
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a primary focus on a URL that appears to be part of a link farm designed to attract traffic related to 'robotics artificial intelligence pdf file download'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gimoguvi.ru/award?keyword=robotics+artificial+intelligence+pdf+file+download PDF link annotation
    • https://wokopapun.weebly.com/uploads/1/3/5/3/135388848/mitadotova.pdfIn PDF document text
    • http://tevalevas.22web.org/tejimavapa.pdfIn PDF document text
    • https://zejosawazir.weebly.com/uploads/1/3/1/8/131856185/7769642.pdfIn PDF document text
    • https://bopunesarikimar.weebly.com/uploads/1/3/1/4/131453984/255124d.pdfIn PDF document text
    • http://sosabuso.22web.org/jabiruxowexodafeberux.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/af9af963-4a10-4b06-8526-b85eca46c08b/el_conde_lucanor_cuento_22_resumen.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/84654642517.pdfIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/36735335923.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/lajokovekezobabutekoluna.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/ledoxobasavixuvubupamenul.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/cardiopatias_congenitas_sociedad_espaola_de_pediatria.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/cvs_specialty_pharmacy_refill_forms.pdfIn PDF document text
    • https://3568c1c9-c281-4b9a-9ea9-d5d291e0176b.filesusr.com/ugd/e5d8db_a8f42cb6fdd140e088c839ed75120dee.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/56062505519.pdfIn PDF document text
    • https://5c09c65f-4728-49e3-9562-8692e696fc4f.filesusr.com/ugd/32acb1_5185f62bef7f436298f4d3e02238abab.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/verirejon/58405763598.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/injury_report_rams_saints.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20066e23-a2f7-4ef1-96a6-13355557b834/98380403335.pdfIn PDF document text
    • https://54179944-c6a3-49b3-9462-5d1939b6aff2.filesusr.com/ugd/49f5ef_7cfe41c135ad4b3a8357ea03a9533803.pdf?index=trueIn PDF document text
    • https://8909b315-4d59-4940-aabf-0fdaa532e0ad.filesusr.com/ugd/4542d9_8bfac535a8784259954557752a05178b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e913d4ec-bb13-4399-ac21-db51276f9959/dungeons_and_dragons_cartoon_action_figures.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012c7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C7E 5348 bytes
SHA-256: 48431909829e9af56e64352c99ce63e920b4b730b13f27b0b4cb160dcf12820d
font_01_sfnt_off00013ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EBC 11288 bytes
SHA-256: f86c1cdd371babd9fde76054c2e4233399399d060977dae392fb4dade81837f9
font_02_sfnt_off00016482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16482 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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