Malicious PDF — malware analysis report

Static analysis result for SHA-256 91188e7d4fd7646b…

MALICIOUS

PDF

67.3 KB Created: 2021-03-09 17:09:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7a99bbb65a4c91f81be0e5003d2e745c SHA-1: 7916f2a661e7ca82b9a1c44446781059acb76703 SHA-256: 91188e7d4fd7646b93e3d6320693223f846639aaf4a5f16a702b057dbfdefd1d
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/award?keyword=directorio+del+gobierno+del+estado+de+guerrero+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4453537/normal_5fc6cc6ba054e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408004/normal_603079fdf264a.pdfIn PDF document text
    • https://lagisarer.weebly.com/uploads/1/3/4/1/134131240/6858422.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375896/normal_5fd8fa3877b7e.pdfIn PDF document text
    • https://nometiru.weebly.com/uploads/1/3/4/3/134379396/ripijadogapi.pdfIn PDF document text
    • https://femuketidoxesi.weebly.com/uploads/1/3/3/9/133997502/4741193.pdfIn PDF document text
    • http://sodowetan.mywebcommunity.org/ap_seminar_imp_rubric_with_scoring_notes.pdfIn PDF document text
    • https://luludosob.weebly.com/uploads/1/3/4/7/134703274/26d5b1.pdfIn PDF document text
    • http://linoveda.22web.org/lomaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403806/normal_6031ef7714e76.pdfIn PDF document text
    • https://sabumamopadav.weebly.com/uploads/1/3/5/9/135957329/06249eac98c21ea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382782/normal_5fe58e3391d23.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tojodoto.rf.gd/68761207650.pdfIn PDF document text
    • http://zobawukesilebaf.epizy.com/jojomafegef.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/aspects_of_child_development.pdfIn PDF document text
    • http://sudexixurijaxoz.atwebpages.com/bridging_cadettes_to_seniors.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/14800064998.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/14765411575.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/craftsman_air_compressor_piston_kit.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/maxugofavudumudan.pdfIn PDF document text
    • http://dasujisetojasel.epizy.com/89242661767.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/ramadan_ornament_vector_free.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_off0000c82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC82C 5464 bytes
SHA-256: 8a27cc234ee7f10ad0fe3a74a39b49f926f277cd5a18c6b5d331f4d31b3800dd
font_01_sfnt_off0000dacf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDACF 10748 bytes
SHA-256: 9edee8eef52ec10b054603b50d5c4d55cace9a297e47ada123565e40fecbbcce

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