Malicious PDF — malware analysis report

Static analysis result for SHA-256 93930a390380f496…

MALICIOUS

PDF

71.7 KB Created: 2021-02-24 17:40:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: a509735c8463ef2eb7a77313b48001bb SHA-1: 4472f68481324144cabe14065b3679f3a71d267c SHA-256: 93930a390380f4965da8d95cbc9569a3ce57350ea37da6ea0a43ed3ba1b7d098
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://yafferge.ru/award?keyword=tissot+t+touch+battery+replacement In PDF document text
    • https://cdn-cms.f-static.net/uploads/4405654/normal_600b9e363f4e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414860/normal_5fddd9528725e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454558/normal_5ff4b5c81b03b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417032/normal_6032c3c7c9dd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493589/normal_6028a6c82ed2f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476766/normal_5fc77a163ba1f.pdfIn PDF document text
    • http://wifejopoxakobo.iblogger.org/15_august_2019_wallpaper_hd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ranesewigiz.epizy.com/digisikalusuromezinu.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/waverixawu.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/tariba.pdfIn PDF document text
    • http://fugebuxojawuris.epizy.com/xibim.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/parental_leave_request_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/foxosivexofanipugovadute.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_off0000dc56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC56 5364 bytes
SHA-256: 5d3f4ef7b8d9bf1bdaffc24680dc4cd03869720950c79da65e96aea421eb10ab
font_01_sfnt_off0000ee6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE6D 10364 bytes
SHA-256: e81c8dffdd4bdbfcbe0193ef3db8cdfff1220ee71a68770d37bfa8a596928eee