Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc86a0cedc8c294e…

MALICIOUS

PDF

65.8 KB Created: 2021-02-21 12:14:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 1503e58a7799f0b6a761af6e6c0c7b90 SHA-1: d144c557809540390f3eaa6f385003b3ca497b5d SHA-256: cc86a0cedc8c294e333a4a273892fd7f9475351389a6fa80428647818c3aef19
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://yafferge.ru/wix?keyword=jason+burkett+dds In PDF document text
    • https://cdn-cms.f-static.net/uploads/4489237/normal_601497b1bdb73.pdfIn PDF document text
    • https://cdn.sqhk.co/lepudijazur/hfXabkv/neketujenok.pdfIn PDF document text
    • https://cdn.sqhk.co/kajutizikodu/o3A7Hge/35260077912.pdfIn PDF document text
    • http://hangzhoumetal.ru/what_qualifies_for_american_with_disabilities_actpzo9s.pdfIn PDF document text
    • https://cdn.sqhk.co/tumosirewuw/Y6jghbp/uber_driver_sign_in_page.pdfIn PDF document text
    • http://copyrightsupporteds.com/libro_de_auditoria_operativari96c.pdfIn PDF document text
    • http://50offstore.pro/jamopidunokutavisikuldo3nf.pdfIn PDF document text
    • http://lopozodedawap.22web.org/28870041227.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468838/normal_5ffe2d9492cb3.pdfIn PDF document text
    • https://cdn.sqhk.co/reditifotep/gf5cKhe/xuwekofetasojapuvugatu.pdfIn PDF document text
    • https://cdn.sqhk.co/rekutadis/higjLgg/25587697284.pdfIn PDF document text
    • https://cdn.sqhk.co/tusadopovet/hgiolgi/sudowarojavefesolosebezo.pdfIn PDF document text
    • https://cdn.sqhk.co/nivatasob/crtbzzz/lucky_block_mod_minecraft_pe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://labiwuju.rf.gd/dapetibiluxuvovokozo.pdfIn PDF document text
    • http://lofoxos.epizy.com/4162314501.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_off0000c728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC728 4980 bytes
SHA-256: d26cd731bb304c5a4d12d08118dfd8efddf8cb4f3ee2c5dbeb06f0ffa4137898
font_01_sfnt_off0000d821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD821 10144 bytes
SHA-256: 871b423c0342d219a85731a2184f1dd1fa8e1ebb2d5d81da9cdf144c17a2e3f7