Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b117054df1fce37…

MALICIOUS

PDF

61.9 KB Created: 2020-11-26 09:56:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 5408119c49275cfb282c76bb2f038d6b SHA-1: 4d4c8cd6ce504d779cd8da0438413c599bb73413 SHA-256: 1b117054df1fce372474fa4beea9eb498133141e4669be158d0823eeb5c27fb8
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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 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.
  • 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://ggtraff.ru/strik?utm_term=loomis+creative+illustration In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367007/normal_5f94ad729f79e.pdfIn PDF document text
    • https://pezopipowom.weebly.com/uploads/1/3/1/4/131406060/6575944.pdfIn PDF document text
    • https://sutukukibefatu.weebly.com/uploads/1/3/4/4/134486522/695b9e0b1df17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5fa81df566ef8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454306/normal_5fa77b77c525b.pdfIn PDF document text
    • https://sasogobol.weebly.com/uploads/1/3/4/3/134387633/d39c2d2f742.pdfIn PDF document text
    • https://fubapora.weebly.com/uploads/1/3/4/8/134897301/b07b305dc.pdfIn PDF document text
    • https://wekonopu.weebly.com/uploads/1/3/4/8/134848362/ad7bbee10c450c.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/waxapoz/principle_of_specificity_in_physical_education.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0535a83d-fdea-40d9-8464-ab8e4e12543d/29314924151.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a26608aa-b698-4aa2-95ea-2a12ad3f92fb/fiance_juste_pour_un_soir_ekladata.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/gulf_coast_saltwater_fishing_report.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/tipemimuzoderonenosewanal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db736e3b-109b-4c2d-850e-c10c711de206/harry_potter_serisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/383da350-64b0-436d-b34b-888af8da740a/jefovibaliz.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_off0000b78c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB78C 4944 bytes
SHA-256: 9b6743b665093f7031d0f96140dd16f8e71ed38a444313908f12343685623416
font_01_sfnt_off0000c84e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC84E 10116 bytes
SHA-256: be532fcf8cb0b680dc3f1486337dd5b601a6c867d12391373e2c6524d5bdf4e5

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