Malicious PDF — malware analysis report

Static analysis result for SHA-256 d386475e3cd9c169…

MALICIOUS

PDF

63.4 KB Created: 2021-02-21 05:06:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: dbc99d23cde65d6c61736af613d2321b SHA-1: 07ce90124ac1b8b17cbcce760e553f5c22c222f7 SHA-256: d386475e3cd9c16920830b0e8003d594d1968dbbb52e7aab7fb01133aa7d918e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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.
  • 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://maypoin.ru/wix?keyword=haunting+ground+ps2+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408479/normal_5fcb2187eb41c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457561/normal_602fa0e8b28c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495531/normal_602e4052f379c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408586/normal_603131f12880e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484103/normal_5fec7557209aa.pdfIn PDF document text
    • http://naturaitalia.space/house_for_sale_flyer_template_free4oi5c.pdfIn PDF document text
    • https://xaweworamek.weebly.com/uploads/1/3/4/6/134610398/2b56460e17a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474752/normal_6016c981bceb0.pdfIn PDF document text
    • https://gokuxevi.weebly.com/uploads/1/3/4/0/134017514/vokufixipe.pdfIn PDF document text
    • https://nixixope.weebly.com/uploads/1/3/0/8/130874324/cd36dea992c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482405/normal_5ffc4f442556b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411709/normal_601b39bc4eb61.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bepapogijarepub.rf.gd/free_website_templates_for_designers.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/tubamokiriladusumu.pdfIn PDF document text
    • http://kirigawegugava.epizy.com/39697267320.pdfIn PDF document text
    • http://duvugagaxanawag.rf.gd/employee_equipment_checkout_form_template.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_off0000bcfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCFC 5188 bytes
SHA-256: b92006f8b07a0c3bf6e86bb3b82feb07352f3688a23b328e834c7c007ae1c09c
font_01_sfnt_off0000ceb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB0 9992 bytes
SHA-256: 21b3483e5c13ae6b425f8c742ffdfb22abc5e1b327f302cf5740bbc86fde37ff