Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5471beec851e57d…

MALICIOUS

PDF

71.8 KB Created: 2021-03-06 16:02:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b818d8b790f046a616175b2f60b3c43a SHA-1: d24aba9dd7a20b1d7d09040ee57c02320f1fe648 SHA-256: f5471beec851e57d5c15d4377e4e488817516734c97811c18ad103d88194dce6
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://midufefew.ru/award?keyword=netgear+r6200v2+vpn PDF link annotation
    • https://rojabufofunos.weebly.com/uploads/1/3/0/7/130776514/gamujatin-bekafibarepupa-xifekanalon-fiwavizikob.pdfIn PDF document text
    • https://pulimogub.weebly.com/uploads/1/3/4/3/134312020/5627990.pdfIn PDF document text
    • https://wemubutuve.weebly.com/uploads/1/3/6/0/136090051/5611193.pdfIn PDF document text
    • https://cdn.sqhk.co/gadewekunel/NaFiaif/plants_vs_zombies_garden_warfare_2_solution.pdfIn PDF document text
    • https://legopaxazomunan.weebly.com/uploads/1/3/5/3/135396831/2560252.pdfIn PDF document text
    • http://timinome.getenjoyment.net/4888629405.pdfIn PDF document text
    • https://wilosobofixi.weebly.com/uploads/1/3/4/8/134858013/nefexibiradim.pdfIn PDF document text
    • https://juxipidupe.weebly.com/uploads/1/3/4/6/134694928/9650482.pdfIn PDF document text
    • https://watagejikifawup.weebly.com/uploads/1/3/4/5/134589749/726455.pdfIn PDF document text
    • https://tojewenegekov.weebly.com/uploads/1/3/4/5/134502344/fuvaguxowafup.pdfIn PDF document text
    • https://gabonavokelog.weebly.com/uploads/1/3/4/6/134684269/9549066.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/towutoginadivu/51474423069.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/66316305745.pdfIn PDF document text
    • http://tafiwepamubov.atwebpages.com/zogenadedilu.pdfIn PDF document text
    • http://nozozuwovore.atwebpages.com/fadudiwe.pdfIn PDF document text
    • http://zudupaxub.myartsonline.com/what_is_the_implication_of_ethics_in_health_and_physical_education.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/56912550463.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/what_time_is_the_renaissance_festival_open.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_off0000dd5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5F 5236 bytes
SHA-256: f3a19d49d12b4cb3edaaff13274a25cb61bf8f498878c50ef38f6428655f37cf
font_01_sfnt_off0000ef4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF4B 10252 bytes
SHA-256: 8da9e4ff3155152735458353b70cea093e08bc31ded19a696c430f2503724da3

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