Malicious PDF — malware analysis report

Static analysis result for SHA-256 ade58e97b77ec97b…

MALICIOUS

PDF

89.3 KB Created: 2021-01-25 21:15:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: bda663a98e806a6ccbac1225cc852bb5 SHA-1: 0ef2612400f401c27102c27a3cc62a637e020137 SHA-256: ade58e97b77ec97b75f0a2dd79d0826be515e648ab32c885da7a8f01760332d2
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wb?keyword=shark%20attack%20maui%20kaanapali PDF link annotation
    • https://cdn.sqhk.co/fedovipawe/kigjc7S/wipekipulemebaxiwasuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413842/normal_5fd17cac6c2f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474722/normal_5fda2ef46ee8f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482215/normal_6001e1c80102c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482848/normal_5fe787bfea584.pdfIn PDF document text
    • https://cdn.sqhk.co/vuxevabuvix/hjhyaAz/last_cloudia_tier_list_2020.pdfIn PDF document text
    • http://geguxejap.22web.org/celulas_falciformes_en_bebes.pdfIn PDF document text
    • http://oneitshop.info/80545489077y4j7w.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406812/normal_5fdecf447cee4.pdfIn PDF document text
    • https://cdn.sqhk.co/rijomawonuj/jbgehzI/57914666435.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367278/normal_5ff3e0bfb3f7d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500440/normal_5ff801111f194.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vekamujibatebig.rf.gd/68747770165.pdfIn PDF document text
    • http://monawob.epizy.com/xuzexuribaj.pdfIn PDF document text
    • http://bezepegu.epizy.com/beremamijabakovazi.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_off0001218c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1218C 5164 bytes
SHA-256: 9e8323a7c2d462317fe87663d6474efcbb97571a9a111346e31ad60682e8a7c3
font_01_sfnt_off000132f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132F2 11408 bytes
SHA-256: d5561b40b9831f0dc23727d52006e57f32ac29f3a76567bd18e5fb5bb707ded0