Malicious PDF — malware analysis report

Static analysis result for SHA-256 07baa583da3a3b6a…

MALICIOUS

PDF

65.5 KB Created: 2021-02-27 10:12:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0159602fe269c5c0eacdb6039b366c62 SHA-1: 3a71271ad0b1a4527439c22eef340e8ec3d8ee30 SHA-256: 07baa583da3a3b6ac693ab22bcc95127c4a18d40acf058a7ccfcad999e29e911
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm designed to manipulate search engine results. The primary URL, 'https://ponafet.ru/wb?keyword=dell%20e6410%20charger%20specs', suggests a lure related to technical specifications. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/wb?keyword=dell%20e6410%20charger%20specs PDF link annotation
    • https://kilejotiwig.weebly.com/uploads/1/3/1/4/131406519/roxuxemonowesof.pdfIn PDF document text
    • https://cdn.sqhk.co/vunebapenuj/fDviexR/kid_city_wwe_2k17_videos.pdfIn PDF document text
    • https://nimafomu.weebly.com/uploads/1/3/2/7/132710507/5127765.pdfIn PDF document text
    • https://cdn.sqhk.co/kupulifip/eV8Iugi/94864944531.pdfIn PDF document text
    • https://bivorafonesakal.weebly.com/uploads/1/3/6/0/136021739/961549.pdfIn PDF document text
    • https://jivekale.weebly.com/uploads/1/3/4/3/134319103/69fd6.pdfIn PDF document text
    • https://foravidamekog.weebly.com/uploads/1/3/2/3/132303307/06837ce36b678.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/ia1YAjd/craft_guide_1._12._2.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/kofabube/70426760803.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/borderlands_handsome_collection_platinum_guide.pdfIn PDF document text
    • http://ferefifadiziv.rf.gd/meeting_agenda_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/relewizimu.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/nursing_course_syllabus_template.pdfIn PDF document text
    • http://meguribezupi.epizy.com/10899532775.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/wobufur.pdfIn PDF document text
    • http://xuwewajefifa.rf.gd/stock_market_open_on_veterans_day_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/excel_bedingte_formatierung_wenn_zahl_dann_text.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_off0000c010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC010 5632 bytes
SHA-256: 33b8b8922670253e4b3344eb16daa6dc88a07998c19968b613359153178e2446
font_01_sfnt_off0000d341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD341 10804 bytes
SHA-256: 099491f207e1875b41d6b4481d7ccae0cf75b1add9daa30f3943f04cf68c441c

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