Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9d9f12cd7da7a3e…

MALICIOUS

PDF

74.3 KB Created: 2021-02-23 07:16:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4a2d09d0088ac998b65224a190ca7090 SHA-1: 08c6c7ccb3b69d3e19303b4c3e569b0ed7a1fd71 SHA-256: a9d9f12cd7da7a3ea471e486eb4da5f7076f4c58c660b1bd92ad56f4827cb924
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://bologen.ru/123?utm_term=dewalt+dw713+used PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4469850/normal_5ffb5b2cb708f.pdfIn PDF document text
    • https://cdn.sqhk.co/kosojilufut/gizZKgi/nudojeronijizokil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415292/normal_5fc9eba7460e5.pdfIn PDF document text
    • https://cdn.sqhk.co/givogaduta/jot6m80/86375038016.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476593/normal_5fef7a81830ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487623/normal_5fcc431f87ac1.pdfIn PDF document text
    • https://cdn.sqhk.co/temirikuji/3mgfhhu/venture_capital_funds_investors.pdfIn PDF document text
    • http://gesabagipo.22web.org/92969503637.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pekufupudemolor.epizy.com/google_samples_android_architecture_components.pdfIn PDF document text
    • http://teveniwavabubak.rf.gd/2466640195.pdfIn PDF document text
    • http://zuvelekoj.epizy.com/alcatel_1_phone_manual.pdfIn PDF document text
    • http://bifiserumokek.epizy.com/9478541138.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/nabofode.pdfIn PDF document text
    • http://zosejanukapub.rf.gd/sisedo.pdfIn PDF document text
    • http://luvurukakun.epizy.com/manualidades_para_vender_esta_navidad.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_off0000e7ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7BA 5112 bytes
SHA-256: 3bc37678673123e310aa2aa498bb955f5f7e0284a509453d1242dfcbc0ecbca3
font_01_sfnt_off0000f957.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF957 10392 bytes
SHA-256: d5daca43095e04e0475b2c1be953d72e1f703852b9f67fc16c6aeaf5212d73d5