Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c743e270a9a27cd…

MALICIOUS

PDF

67.4 KB Created: 2020-12-13 16:39:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 24b32e9f1aaa096c277557f055a19fd6 SHA-1: 84137d318020af189060fc6cff8d232359897541 SHA-256: 8c743e270a9a27cd4e45dfd8be29fee41e755dcd5c03fe7c80e41e74b67fb69f
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/aws?utm_term=shingles+vaccine+age+guidelines In PDF document text
    • https://cdn-cms.f-static.net/uploads/4453747/normal_5fc1a05d33a72.pdfIn PDF document text
    • https://bozobamawokoruv.weebly.com/uploads/1/3/4/3/134350924/modiso-merajidatuzo-wewib-dipera.pdfIn PDF document text
    • https://fusopozosasotex.weebly.com/uploads/1/3/4/4/134477759/31f2077b85a1d74.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465151/normal_5fcf2b8d63205.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467043/normal_5fa9e7ae94171.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/09f3f92c-c2fc-44bb-b78f-b085ed00d23e/19665608552.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/107ee962-250a-4c56-bfe7-8817d2aba585/wubigurugipuwuzoji.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/30766718286.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee04f5d3-7518-4a75-8fc0-cef5f60b1c81/74983533630.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d946728e-f573-4197-9ace-e3412e473375/beverly_hillbillies_banjo_tab.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/anatomy_coloring_book_kapit.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/identify_beginning_and_ending_sounds_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0f5a46a-d796-4b10-b693-f79c925364bc/89121794289.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/2181370829.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/76259521648.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_off0000ca38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA38 5268 bytes
SHA-256: d79f062f080f24da290ca513b678e5019ca115235ebc76031a7f87c4d9097934
font_01_sfnt_off0000dc2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2A 10832 bytes
SHA-256: 50ee118ed7d0c330bffa0d4d1c8703375155b7ad311187caaa7c96fee2283576

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