Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cdc6942a89cb19a…

MALICIOUS

PDF

35.7 KB Created: 2020-10-04 01:30:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a40ea7a60cf384c82f4c21795fcb3776 SHA-1: 299f5a69ece063f68e9891919e5fd1a9238b03f3 SHA-256: 7cdc6942a89cb19af18aeb218986ea6fbb081c888297e0b7c7dcfff2186c0bd9
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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?keyword=realflight+7+dongle+emulator+download In PDF document text
    • http://files.rhythmresearchresources.net/uploads/1/3/1/6/131606127/gelizoxi-mevep-xuzumifam.pdfIn PDF document text
    • http://files.hawkecreations.com/uploads/1/3/0/9/130969182/254043.pdfIn PDF document text
    • http://mokeju.eartharkbotswana.com/uploads/1/3/1/4/131483245/5513673.pdfIn PDF document text
    • http://tuzip.followtheleaderedu.com/uploads/1/3/1/8/131856097/nigigale_wugerejabebulot_midavefuvus.pdfIn PDF document text
    • http://xagomab.childrensacademylouisville.com/uploads/1/3/1/0/131071290/famixosonosopogim.pdfIn PDF document text
    • https://site-1038919.mozfiles.com/files/1038919/jelunalidoxegatani.pdfIn PDF document text
    • https://site-1040100.mozfiles.com/files/1040100/gumejanodanodofipedej.pdfIn PDF document text
    • https://site-1037079.mozfiles.com/files/1037079/kovatod.pdfIn PDF document text
    • https://site-1037886.mozfiles.com/files/1037886/jegudosuberotivom.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/16659496-90c2-4c97-97d2-e02f74d54ff9/mapiwubif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/593326db-0e1f-4169-a2e9-fd1c16b3197f/125816667.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c2907aa-8c60-434c-b6ac-84c53b712b76/34750554156.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_off00004e08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E08 5324 bytes
SHA-256: bb1ab65af98bf88bc0de24827a43abcae8d8955c2dadfababa8060ff1c861912
font_01_sfnt_off00006012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6012 9976 bytes
SHA-256: 0d619a319f8e8a27e357f99aadeda30fa7db42694345ad568fa49769ccb41ff0

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