Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2e7a7446e590d5a…

MALICIOUS

PDF

64.7 KB Created: 2021-02-24 06:40:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: dfef009c61b519021f01548054c23543 SHA-1: 40878e30c4322c7cb09200c3166e09c1b00eda1d SHA-256: f2e7a7446e590d5a380967063f91d080333db8c37dd3c74c85f745f8b907c455
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://seumenha.ru/wix?keyword=namibia+university+of+science+and+technology+courses PDF link annotation
    • http://noxokolozoj.iblogger.org/kubizowovimak.pdfIn PDF document text
    • http://vuzitofakomuj.22web.org/97051396614.pdfIn PDF document text
    • https://wetebofi.weebly.com/uploads/1/3/1/6/131608016/3ecfb0f1353216c.pdfIn PDF document text
    • https://jinonapipi.weebly.com/uploads/1/3/4/4/134481743/zigalivaje.pdfIn PDF document text
    • https://lozofatogil.weebly.com/uploads/1/3/0/7/130739213/nalokobarilus_dogisafavuxad_kunanomajetoz_wokedubu.pdfIn PDF document text
    • https://maxazokal.weebly.com/uploads/1/3/1/6/131606281/fezedifeme.pdfIn PDF document text
    • http://nawukebakesejid.iblogger.org/76498998861.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wubogijogazerew.epizy.com/dtecteur_de_mouvement_infrarouge.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/1080585942.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/chattels_list_form.pdfIn PDF document text
    • http://tufukupetateto.epizy.com/english_encyclopedia_dictionary.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/arizer_solo_2_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/mdpi_sensors_latex_template.pdfIn PDF document text
    • http://zaxukesaludu.epizy.com/narezudepoxumu.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/8069009086.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/xesefavutomodutunuzofovix.pdfIn PDF document text
    • http://furovival.rf.gd/manaxamomoxifibubudipu.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_off0000bde2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDE2 5704 bytes
SHA-256: 39ee27a985061ff14f5a37638f3741266ff6872f1e6eaca9b3a10be9bc2566de
font_01_sfnt_off0000d137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD137 10616 bytes
SHA-256: 5822b418c28697a8be82703080f1be7e952ad98361c59582d1ba04c2804a8188

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