Malicious PDF — malware analysis report

Static analysis result for SHA-256 d86ccb8dbe27da00…

MALICIOUS

PDF

66.6 KB Created: 2020-11-11 08:21:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: cb60d4b59667c5c90ac348faae53b85f SHA-1: 2f82bbf64838d0d80fa757a3bb01ecf77d5975f7 SHA-256: d86ccb8dbe27da00b4125c827c3992d32191e287fd675cbaeadc7e5f637ff2f7
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/wb?keyword=the%20discipline%20of%20grace%20free%20pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370791/normal_5f926ce0e5446.pdfIn PDF document text
    • https://belavapapase.weebly.com/uploads/1/3/4/4/134444277/8597435.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393488/normal_5fa0bf18cff5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369522/normal_5f8b7917afbde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370278/normal_5f8a0eb6aa63a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372399/normal_5fa03cc76bea3.pdfIn PDF document text
    • https://nisutezobeta.weebly.com/uploads/1/3/4/4/134486685/aa7d29.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/kuwiv_pepilep_potav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419423/normal_5f9bd8288a9e0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4169403-ba0d-450b-99e6-149e659c4ef8/magnets_and_electromagnets_ks3_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/zagiramadatime.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/106d1aef-4db2-4b80-8022-14b3421d9c47/43544187209.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/2112295146.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_off0000c735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC735 5368 bytes
SHA-256: 4fd442e6914233f323bb44e11bb89906e030ef2fcb5db292e50b85768b46c339
font_01_sfnt_off0000d975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD975 10824 bytes
SHA-256: 5856226dcfb215b5a6261cc49a2233f9f9378b96a93bac1a5196045b305af289