Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bf697d9d0cbf615…

MALICIOUS

PDF

67.3 KB Created: 2021-02-10 01:03:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 15e5a88fa59c96ddbaa19fb5f2b1c9ab SHA-1: 227d8b586ddee859f1bb4cf44174f929a0e6a08b SHA-256: 6bf697d9d0cbf61566d71777f6c58a6941a953aa689847d1b51c88e6a029450f
154 Risk Score

Malware Insights

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

The PDF contains embedded links pointing to known malicious redirector infrastructure, specifically 'https://crophysi.ru/aws?utm_term=burkert+6213+datasheet'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://crophysi.ru/aws?utm_term=burkert+6213+datasheet In PDF document text
    • https://static.s123-cdn-static.com/uploads/4472774/normal_5fe5f8b71df2f.pdfIn PDF document text
    • http://aycotoro5.xyz/bewizolakiweweras6ct.pdfIn PDF document text
    • http://rte-ita.fun/stream_4k_movies_freerxq6b.pdfIn PDF document text
    • https://zorusijumabek.weebly.com/uploads/1/3/4/8/134851431/zonifopitusogeg_jesijizijajof_kolenuduja_tuwepiti.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418383/normal_5fce63c1e34af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410030/normal_5febdace3b8e0.pdfIn PDF document text
    • https://garujidizog.weebly.com/uploads/1/3/1/3/131398488/5ff0697bdfd2c3.pdfIn PDF document text
    • http://iranomics.com/gobiwijarerobozizakupitepni4mr.pdfIn PDF document text
    • https://kowexemi.weebly.com/uploads/1/3/1/8/131872048/5404515.pdfIn PDF document text
    • https://tesevazaxuj.weebly.com/uploads/1/3/4/4/134476418/tuxaxojogok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479240/normal_5fe6f13e65e8a.pdfIn PDF document text
    • https://babotiditufo.weebly.com/uploads/1/3/4/6/134694550/5150907.pdfIn PDF document text
    • http://zelolugo.22web.org/88818021710.pdfIn PDF document text
    • http://thefortykuti.com/quick_sand_hell3tu4p.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/baxunaf/que_es_una_churrera_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/zimotogenapajuv.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/30865067734.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/beiimaan_love_movie_video.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/wiwodasemisefurazogepedix.pdfIn PDF document text
    • http://tajomum.epizy.com/tomivunuzemefuz.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/xavoxunupixiwogaxaguza.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_off0000c6fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6FC 5496 bytes
SHA-256: 940efb338801bcaded15f35d49716edec0b2fa79ffa106edeb93bc1dadbedc6f
font_01_sfnt_off0000d9aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AA 11548 bytes
SHA-256: c98021c78a9a0aa0a4759686601fb14dbc81012cc374c4ee41ca881e9b806d28

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