Malicious PDF — malware analysis report

Static analysis result for SHA-256 45bfdfdf1544b11c…

MALICIOUS

PDF

69.7 KB Created: 2021-02-11 20:52:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 593036c5a440c4af0ad64eaa7dbb8fb7 SHA-1: c7a126132d3579b72d32c67acb5a790b33dd9fdd SHA-256: 45bfdfdf1544b11c2345c56e41661673add28255bc3af2208774cee8237278d7
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/wix?keyword=civ+3+deity+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380228/normal_600d969582311.pdfIn PDF document text
    • https://jevomijaled.weebly.com/uploads/1/3/1/8/131856338/roveviguzarepef_fajisixug.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393026/normal_5ff11cb65d539.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444623/normal_60148705afec4.pdfIn PDF document text
    • https://zubosevofugojat.weebly.com/uploads/1/3/4/3/134307347/volabugule_vosafekuw_komemo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462694/normal_601d96308cc1f.pdfIn PDF document text
    • https://rewajugelawuz.weebly.com/uploads/1/3/0/7/130738764/3016305.pdfIn PDF document text
    • https://luzulobopado.weebly.com/uploads/1/3/2/6/132681737/wonufurotijed-jakabifagale-mixobaribemew-radejo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486983/normal_5fccee04be7b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408346/normal_5fe6675673acf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454051/normal_5fd76b1860116.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kefabebabefi.rf.gd/kevivasedajoti.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/lusagaga.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/jukufowow.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/21771891377.pdfIn PDF document text
    • https://s3.amazonaws.com/wizakokowe/21096442654.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/ativador_para_office_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/expanding_tactics_for_listening.pdfIn PDF document text
    • http://xexelakufakeze.epizy.com/jaraxifepigukuroz.pdfIn PDF document text
    • http://warufadul.rf.gd/88454344993.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_off0000d6c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C0 4708 bytes
SHA-256: 7fc2b871c71178649b78354692cc81977b9b023ce2adefdb42271100f0445f77
font_01_sfnt_off0000e6ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6EC 10308 bytes
SHA-256: 24ea4dbc9bdc1265de7b795d5a19451a60218e5388a647be48e25e369a4fc5f9

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