Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fb693c2585eb934…

MALICIOUS

PDF

70.4 KB Created: 2021-01-26 17:43:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5ad29a210cfdc5868af82b64efeba888 SHA-1: 9865882fa32af8e3c26ca4ae277dff6caa8f65b3 SHA-256: 1fb693c2585eb934da9f2365af8570314bccc892d792fa9afee15ab924f9fd35
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://baarspo.ru/aws?utm_term=banwell+mccash+spectroscopy+pdf PDF link annotation
    • https://cdn.sqhk.co/jepivitixiwo/ahipwJ5/19517913763.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409110/normal_5fd8761aa6105.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383579/normal_5ff19a1bd3764.pdfIn PDF document text
    • https://cdn.sqhk.co/pirujezexod/ihEpdgg/42103276766.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366646/normal_5fd239d310e1d.pdfIn PDF document text
    • https://cdn.sqhk.co/mexovaru/8A9x35L/79014056925.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402737/normal_5fe9afd35e84f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461786/normal_5fec9f6fdf9f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477139/normal_5fe2bae441fd3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422134/normal_6008a31e57db2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407807/normal_5fdc920adfa44.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383322/normal_600180108e2bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387229/normal_6000a09a92db1.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/nowonovege/fazip.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/82307053784.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_off0000d5c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C2 5640 bytes
SHA-256: ff5e0dff09f22162efc06d917a6c3383fd63553cfa44f5ff0306921dc4a86a17
font_01_sfnt_off0000e8db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DB 10584 bytes
SHA-256: 60490484fe6b31e6e774e33d31db1ddf609c9954db84ea228ec2d99d00f0d23b