Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a61ca91983eacdb…

MALICIOUS

PDF

72.7 KB Created: 2021-02-28 05:24:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a273de433214d2409f65c4214008b617 SHA-1: c7479fbc4d4e04f6721a80d666ede6cf232b6431 SHA-256: 7a61ca91983eacdbe0f9b2cff0c9861e6d6cdab9f52b12aa48d5edb9acc1d834
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/award?keyword=how+to+setup+xerox+workcentre+6515+scan+to+email PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4449417/normal_5fcf4ae6dbe8c.pdfIn PDF document text
    • https://fafetomipisiso.weebly.com/uploads/1/3/4/6/134603542/moletajesitixo.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwipabobatu/hijbXhb/dreamcage_escape_level_8.pdfIn PDF document text
    • https://cdn.sqhk.co/siloneza/phhzjbp/difidawafidan.pdfIn PDF document text
    • https://jowetirepenu.weebly.com/uploads/1/3/1/3/131383619/eb14c42e2d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449774/normal_5fe06f336c946.pdfIn PDF document text
    • https://cdn.sqhk.co/bagudivibi/ghcMyja/68443520342.pdfIn PDF document text
    • https://lipijunozawisek.weebly.com/uploads/1/3/4/7/134721324/4946756.pdfIn PDF document text
    • https://dizuvojuxi.weebly.com/uploads/1/3/1/1/131163617/5061209.pdfIn PDF document text
    • https://mabajiluvepe.weebly.com/uploads/1/3/1/4/131409333/9e8a3e010d6d9.pdfIn PDF document text
    • https://dumetokewip.weebly.com/uploads/1/3/4/3/134394823/fefejaj-duzojomojozunan-zubuxudev-gigidukofe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466413/normal_5fce3396491f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369665/normal_5fe7ecc2dafe4.pdfIn PDF document text
    • https://magifoxokepo.weebly.com/uploads/1/3/6/0/136053300/2490520.pdfIn PDF document text
    • https://cdn.sqhk.co/limizolaxa/fYRPagg/lotejexeware.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/kopisigapub/business_case_study_report_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/34727019670.pdfIn PDF document text
    • https://s3.amazonaws.com/girilifawuxi/aquos_tv_sharp_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/55899429547.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_off0000de3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE3E 5592 bytes
SHA-256: 1f36227e3b839d0ffbf712405f21127ec4a0e345bee32e7c826c340f10a956f3
font_01_sfnt_off0000f152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF152 10648 bytes
SHA-256: 5d8d4b2b2c50ae491f30be7a3ad188e8d9fd07a43052bda1212426b8d0826196

Open this report in the interactive analyzer, or submit your own file for analysis.