Malicious PDF — malware analysis report

Static analysis result for SHA-256 f05732d6a74afb32…

MALICIOUS

PDF

73.0 KB Created: 2021-02-24 14:54:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 56971a584f462b9fddcf07e649f53d47 SHA-1: cb9b276c8b231459ea9aee3216919ee53594b059 SHA-256: f05732d6a74afb327234baf869ec46dccc2d2508c6a294d2fd2ab338f7ff832c
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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=homemade+reverse+osmosis+for+maple+sap In PDF document text
    • https://cdn.sqhk.co/jefutubup/oiaqEja/basketball_master-_star_splat_bedding.pdfIn PDF document text
    • http://wopazav.22web.org/63780352156.pdfIn PDF document text
    • http://g2am2e.xyz/equation_of_tangent_to_a_circle_worksheet66s7p.pdfIn PDF document text
    • http://espaceabonne.com/15021651028rboay.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410201/normal_600fc07080843.pdfIn PDF document text
    • http://torevifij.iblogger.org/luvinorarodotilojofex.pdfIn PDF document text
    • https://cdn.sqhk.co/rajexizeba/O4YiaV1/80946701878.pdfIn PDF document text
    • https://cdn.sqhk.co/lomekojop/eifGgiX/zimavazomobunetel.pdfIn PDF document text
    • https://pixebekisutajud.weebly.com/uploads/1/3/0/7/130775176/minolevowufezoru.pdfIn PDF document text
    • http://investmag.org/new_one_minute_manager_summary06frn.pdfIn PDF document text
    • http://lesantyqas.online/inspired_education_inc_answers705sh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414864/normal_5fcd43dd615b4.pdfIn PDF document text
    • https://kesevaze.weebly.com/uploads/1/3/1/3/131383297/61e4f02.pdfIn PDF document text
    • https://lubikumak.weebly.com/uploads/1/3/1/4/131453733/jovojofolinoseti.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/fific73/spill_out_synonym_verb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367305/normal_600ff32a4fa8c.pdfIn PDF document text
    • https://pejagefetem.weebly.com/uploads/1/3/0/8/130815482/2faf06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375696/normal_600dc54daeeb7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pofuwumol.rf.gd/how_to_write_a_memorandum_letter.pdfIn PDF document text
    • http://mubomapobe.epizy.com/credit_bureaus_reporting_inaccurate_information.pdfIn PDF document text
    • http://dovagoxaluzof.rf.gd/mawaxowifuwe.pdfIn PDF document text
    • http://kotazok.epizy.com/suniruduf.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_off0000e0d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D3 5208 bytes
SHA-256: 8e952485383fddcb3caf3c4aa0eeb09400b64cc8cc83ecf023b14e127647620c
font_01_sfnt_off0000f272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF272 10596 bytes
SHA-256: 8b5090132114135bb1735cf78f7bf71f0728c232379481424d90185f644dfb97

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