Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cd99952d78658f1…

MALICIOUS

PDF

63.8 KB Created: 2021-02-21 18:33:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8e2eb8efd4b34ced022be6599eb62dec SHA-1: 1c1c649abeb8502308c54dbbc71a44ae62f5fd60 SHA-256: 9cd99952d78658f1cce2d330730efac72f1dbd3184f156985481771552d74c63
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://druttle.ru/wix?keyword=hope+academy+for+autism+mesa+az PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445338/normal_601ad8412f479.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454046/normal_60324d07bbd99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373505/normal_5fd1813b9658d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385612/normal_60255c0442aec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370996/normal_5fc8fb6d87e98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413109/normal_5ff558ab994b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444644/normal_5fd0f07e73973.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401538/normal_6017865b8bc78.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/jobavo/bukhari_hadees.pdfIn PDF document text
    • http://fafovinipola.epizy.com/juxeg.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/267317542.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/setuvawope.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/77819016382.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_off0000becd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBECD 5384 bytes
SHA-256: 3b41167e0140533ff44b9856041d37b18975ffb7b695df9b78575ab6a570f978
font_01_sfnt_off0000d119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD119 9744 bytes
SHA-256: c593c3ad6c0eb36e1777691f9fabe42f4d8e783b60ffc7616f4fa216cd3350bc