Malicious PDF — malware analysis report

Static analysis result for SHA-256 730b07ad384faa45…

MALICIOUS

PDF

70.2 KB Created: 2021-02-27 12:57:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 604be75d83228def2867ccc80dd78f51 SHA-1: db199d5bb723e1fd712f936a01f1ea80b0f2fcb2 SHA-256: 730b07ad384faa459abef93a6f8da486710af1cf9b1d47d97d0b063cdbde16af
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/123?utm_term=sword+art+online+fatal+bullet+review+deutsch In PDF document text
    • http://nuloriwilorij.scienceontheweb.net/duligubolapatisujipapig.pdfIn PDF document text
    • http://agreevudb.rest/myrkur_house_carpenter_lyrics_meaning1k6sh.pdfIn PDF document text
    • http://wazepewazivulil.mywebcommunity.org/english_grammar_simple_present_tense.pdfIn PDF document text
    • http://tiktoktop.design/how_to_start_an_electronics_companyd71oe.pdfIn PDF document text
    • http://stroymarketmetal.ru/tubujg1j9f.pdfIn PDF document text
    • http://simultaneously.space/graphing_linear_inequalities_practice_worksheet_kuta_softwarej07nd.pdfIn PDF document text
    • http://samyog.ru/2363981124a4hma.pdfIn PDF document text
    • http://community-day.ru/2932942625551324.pdfIn PDF document text
    • http://xazufajemexeb.22web.org/13219764302.pdfIn PDF document text
    • https://watibovogop.weebly.com/uploads/1/3/4/8/134876481/02cbf0.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/saziwijaxodav/60716542931.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/62143234680.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/new_york_travel_guide_app.pdfIn PDF document text
    • http://joxelexudar.epizy.com/html_template_code_for_login_page.pdfIn PDF document text
    • http://zubiluwetij.myartsonline.com/how_to_change_epson_8350_bulb.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_off0000d6b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B3 5504 bytes
SHA-256: 7462ea7b326ef30d41758496b376e2735edb7939f7298737a9fa3b74827a44da
font_01_sfnt_off0000e97c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE97C 9980 bytes
SHA-256: 116a8d2950b2c5019b1d3f922850903eff17293927ef5cb8941073c049933e4f