Malicious PDF — malware analysis report

Static analysis result for SHA-256 b66d40a65263e568…

MALICIOUS

PDF

71.2 KB Created: 2021-02-28 07:41:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 03deed81ffca7ac203949b0051264fd9 SHA-1: a8eb05f65e726f365fe3d0ad5bc8b561776503dc SHA-256: b66d40a65263e568c60e8c5c5fc1ab369ea1ba2491a95a23ccaa87522c7564c2
136 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
  • 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/aws?utm_term=how+can+i+update+my+samsung+tv+software PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4406516/normal_5fd7cc5589339.pdfIn PDF document text
    • http://hookup154.online/add_integers_number_line_worksheetlu4k5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480758/normal_5fe7cc5713bcc.pdfIn PDF document text
    • http://grandov.pro/meade_etx_70_accessories89u2t.pdfIn PDF document text
    • http://wide-take.top/95112680784h7usv.pdfIn PDF document text
    • http://nashremont.site/dijukipukurvz6g.pdfIn PDF document text
    • http://fashion-deals.xyz/cisco_rvs4000_default_logintfuw9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369173/normal_60219e3c4af58.pdfIn PDF document text
    • http://manuximaxemeje.scienceontheweb.net/23442448228.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377704/normal_6033fe92e9b62.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/rixevozajixezos/jifazeli.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/boduwasodufoneled.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/chicago_manual_of_style_capitalize_earth.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/android_apps_free_movies.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/92717514623.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_off0000d93c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD93C 5660 bytes
SHA-256: f2d47ad281d37ce8669e7fbe9eb732542c7024e96e37c077b1eb1a30e20e19f4
font_01_sfnt_off0000ec8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8B 10388 bytes
SHA-256: 9c9f2b375cd20fc18ca477285b0a86f6b0723fe7f5d093866689cf66c67ad05a