Malicious PDF — malware analysis report

Static analysis result for SHA-256 53d9e2530dc9eeb2…

MALICIOUS

PDF

70.9 KB Created: 2021-03-03 16:11:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ed59523ec461364ce4ca6145b1619a70 SHA-1: 45ffd15b7221c91dec5ce3eb2e20b2467536fa22 SHA-256: 53d9e2530dc9eeb2b1068109861de7e2f71e89288147805a9ce80a156f12546b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crophysi.ru/award?keyword=blank+map+of+the+world+continents In PDF document text
    • http://fruct.space/71676399502j3m3l.pdfIn PDF document text
    • http://teachost.com/singer_quantum_stylist_9960_needle_threader_not_workingffbua.pdfIn PDF document text
    • http://sarumimatonamex.iblogger.org/71404362563.pdfIn PDF document text
    • https://cdn.sqhk.co/sabiwizi/iw4gchj/luxubojotalidamezi.pdfIn PDF document text
    • http://tekplafond.xyz/sawexigiwawobapunxegjv.pdfIn PDF document text
    • http://f13x.xyz/parirutnd4hf.pdfIn PDF document text
    • http://umdtheatre.ru/bixujivi5mik6.pdfIn PDF document text
    • http://xivusolokedujes.22web.org/akashaganga_malayalam_movie.pdfIn PDF document text
    • http://ergors.space/defixozo4l53p.pdfIn PDF document text
    • https://rovoduwomu.weebly.com/uploads/1/3/5/3/135332400/nevivuralatuvu.pdfIn PDF document text
    • http://dalurekawo.iblogger.org/bacula_windows_server.pdfIn PDF document text
    • https://cdn.sqhk.co/zisujidixa/gibiedt/lit_romance_fiction_books_2019.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://konugatevokaxot.epizy.com/3986452744.pdfIn PDF document text
    • http://wofevumovef.epizy.com/writing_meaning_in_tagalog.pdfIn PDF document text
    • http://tidefos.epizy.com/35875309863.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_off0000d6cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6CC 5600 bytes
SHA-256: 6cf5bd551c2ebee4c87673d6fa814f29d5b15869a0db00fa3e03660acd5ad0ed
font_01_sfnt_off0000e9bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BF 10848 bytes
SHA-256: 063e1cb8892d1366a2ce8803ba7fbc9a8af0b094becb1c141142be0634e82ce5