Malicious PDF — malware analysis report

Static analysis result for SHA-256 44cad3b20fdb81ff…

MALICIOUS

PDF

77.2 KB Created: 2021-02-27 02:08:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7224ecc9408851bf823230433f4ba0db SHA-1: 394198567897131c63a6cb51456750943f58ec77 SHA-256: 44cad3b20fdb81ff4acba650ae88e62de5d0f26a7299c2ea0426ecea527eb4d2
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://zajinet.ru/aws?utm_term=frederick+jackson+turner+frontier+thesis+excerpt PDF link annotation
    • https://fimozafovobas.weebly.com/uploads/1/3/2/7/132741130/9034169.pdfIn PDF document text
    • http://kadesevi.iblogger.org/2010262890.pdfIn PDF document text
    • https://segakimorepej.weebly.com/uploads/1/3/0/7/130738797/dobapalorujenirupos.pdfIn PDF document text
    • https://mukozuzaze.weebly.com/uploads/1/3/4/2/134265885/kolovimule.pdfIn PDF document text
    • https://pinosapop.weebly.com/uploads/1/3/4/1/134131344/niloleti-bexedokipos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502698/normal_5ffed5436757a.pdfIn PDF document text
    • https://subafoxa.weebly.com/uploads/1/3/1/3/131379179/ferelasanali_dumatipalexa_gigapuzaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385612/normal_602acc578e157.pdfIn PDF document text
    • https://duketexu.weebly.com/uploads/1/3/4/7/134725944/banod_gulusakupa_bajage_mamaxo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369331/normal_60054b0c9d5f8.pdfIn PDF document text
    • https://buvaranugabenu.weebly.com/uploads/1/3/0/8/130873820/juvadakesor.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/lekezaru/kotatokovuwatila.pdfIn PDF document text
    • http://gevevutonixojub.epizy.com/72655151224.pdfIn PDF document text
    • http://nixevafuzija.epizy.com/z_for_zachariah_netflix.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/winrar_crack_free.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_off0000f195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF195 5372 bytes
SHA-256: 66aad63d8493c48d626903f31549f6e9562694a2983995074152cde52a7ef4a3
font_01_sfnt_off000103e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E9 10552 bytes
SHA-256: b6d19390917a5c35beb1644be2a77cad3a6d3458ff2563356e2109da7e49ed14