Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf099065a69656c4…

MALICIOUS

PDF

66.2 KB Created: 2021-02-20 04:04:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 54bd2e1500ee8538f8bf288e6991fbae SHA-1: e4de8651bcfcf92e7c09750fdc82148c15818f18 SHA-256: bf099065a69656c4d576982e51ca56fd251cadb737dc42a5cd8d4ed9b110a9aa
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jacksth.ru/wix?keyword=clifford+viper+alarm+manuals PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495838/normal_600da783e6115.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379217/normal_5ff1468ca89e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408875/normal_602ca1c498c03.pdfIn PDF document text
    • https://bujubilefo.weebly.com/uploads/1/3/1/4/131406518/foboden-xijikewuguzodu-jevexadida.pdfIn PDF document text
    • https://gawufuxawejax.weebly.com/uploads/1/3/1/8/131855981/8932255.pdfIn PDF document text
    • https://wodiwige.weebly.com/uploads/1/3/5/3/135317556/sixulafijukema-rilepipite-pafogev.pdfIn PDF document text
    • https://ranetaxute.weebly.com/uploads/1/3/4/8/134886021/3805f990997242.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391920/normal_5fe67861c45eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416332/normal_602be49ea0b17.pdfIn PDF document text
    • https://fanamavikere.weebly.com/uploads/1/3/4/6/134610997/21720f536ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387424/normal_5fe6206b82857.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bagegamejejupu.epizy.com/cars_4_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/employer_s_requirements_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/81978326283.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/zevomak.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/30542560437.pdfIn PDF document text
    • http://repeputowuz.epizy.com/69229554386.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/39814850220.pdfIn PDF document text
    • http://bulekixor.epizy.com/adductor_strain_treatment.pdfIn PDF document text
    • http://janizopug.epizy.com/jupugalajuxupozato.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/cipherlab_8000_scanner_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/definition_informant_synonym.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/bosch_microwave_manual_defrost.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_off0000c862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC862 5152 bytes
SHA-256: 0aabf829bd7cbe76d957c0855fb015f2f59d2ec20716cca0b3dde19c67e037f4
font_01_sfnt_off0000d9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D7 9740 bytes
SHA-256: 404f5205a9efd107093ad7cf89933b5cbc14ecf4267c8d343a21c1d439075fd1

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