Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f9c92ed1897f2a1…

MALICIOUS

PDF

73.7 KB Created: 2021-02-28 06:00:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6e4e519b0706dbb8156c9b63e504f484 SHA-1: e651ff6019ae62b6d58efdfa9a979992403f079c SHA-256: 4f9c92ed1897f2a1488f08b5cd85dab2bb30155419bcedc052e7c1d696fd6069
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/aws?utm_term=motorola+spn5447a+bluetooth+headset+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4479942/normal_6039f9f0ea7d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480753/normal_5feb1bc21a3b0.pdfIn PDF document text
    • http://summ-green.fun/formulario_para_solicitar_ley_300pm6wi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409393/normal_60115f3acfddb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447646/normal_6025d22edb013.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447271/normal_6004f65fae46d.pdfIn PDF document text
    • http://weraka.online/43086211198bk2hf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444123/normal_6033ac64dcd8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381347/normal_60159f12003ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451230/normal_5fcf07c280302.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406466/normal_601cfbf439911.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/gomakobez/therme_vals_peter_zumthor.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxegu/fimuda.pdfIn PDF document text
    • https://s3.amazonaws.com/zexozavo/starbucks_french_vanilla_latte_nutrition_information.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/film_lady_chatterley_2006.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_off0000e047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE047 5636 bytes
SHA-256: 74805295d0cc1f9e4f32d6c03577d4565c5016a3cce196950461551eecde5133
font_01_sfnt_off0000f358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF358 11324 bytes
SHA-256: 2baf9672f708cfc6f7baaf3928497e583aee5b6936bcf949ac40b7b3eed1bda3