Malicious PDF — malware analysis report

Static analysis result for SHA-256 22cd2074695187e0…

MALICIOUS

PDF

69.0 KB Created: 2021-02-14 07:04:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f117afdaa4de9b688e5e2b9dd0445b7d SHA-1: eb121dda37220f932c321a3c885511860c8ee51b SHA-256: 22cd2074695187e0338d5107948825df10fa418a9980266c559bf81eb2dad255
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://jacksth.ru/wb?keyword=mileage%20expense%20report%20form%20free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463824/normal_5fffb8ed54425.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479445/normal_5fdd5a91206b3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489414/normal_5fcf5e1201215.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414173/normal_5fda55992097b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374700/normal_600e0086c2c00.pdfIn PDF document text
    • http://idealslimitaly.site/boxawovefalojol17i8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470545/normal_5fdf704889198.pdfIn PDF document text
    • http://znasila.ru/powezedonejskoe.pdfIn PDF document text
    • http://mir23.xyz/metudaxatelixazuxofo80bvk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461219/normal_5ff897d8b5985.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487916/normal_5ff55c27d870f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446270/normal_5fe5d2cba7f21.pdfIn PDF document text
    • http://prostosite.site/kirebot0tmvj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447641/normal_5fd8aeb4bfc85.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/tawosutosuxi/tofune.pdfIn PDF document text
    • http://bivujugekoxuso.rf.gd/informal_gathering_l_g.pdfIn PDF document text
    • http://nonogopikizezed.rf.gd/46734269773.pdfIn PDF document text
    • http://fazafowunop.epizy.com/92151407484.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_off0000d057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD057 5292 bytes
SHA-256: 46f51ce29ada0c3ac82f9aa2d0f0d4e6800d019628b401d73bb3704796aeb69a
font_01_sfnt_off0000e255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE255 10820 bytes
SHA-256: 8085f9d30b6fa106b9d47b55652fa08d5ca834a2a255623bfe2f534bd89e86d8