Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff5606825bff8d9a…

MALICIOUS

PDF

71.7 KB Created: 2021-03-03 00:52:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 310c9c7235f85e5dc056572b1334ca9f SHA-1: b548a264621b2d569278f545b28324d97b9db367 SHA-256: ff5606825bff8d9a57107a14d4760e8dd477674649c3e87d2e2193bd83131110
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://xajibur.ru/wix?keyword=light+bulb+cage+for+ceiling+fan PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387565/normal_6021f70e3b356.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490251/normal_5fe79d07202eb.pdfIn PDF document text
    • https://cdn.sqhk.co/wemopizajazo/idigBha/73405303801.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424683/normal_5fd67496637fc.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/gjjf8pn/madness_combat_11_music.pdfIn PDF document text
    • http://tofugezupeb.mygamesonline.org/muzol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373749/normal_600de812abd1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452612/normal_601f9a9ab3c22.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427287/normal_60078c011d0cb.pdfIn PDF document text
    • https://cdn.sqhk.co/surikuzezun/yrW43ig/jizazolumuvuzufoxe.pdfIn PDF document text
    • https://cdn.sqhk.co/sowodopevew/njgsFjd/nanupuloli.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/hdsgfhi/63567006356.pdfIn PDF document text
    • https://cdn.sqhk.co/zekafomaze/hdjA6ih/professional_pilot_logbook_binder.pdfIn PDF document text
    • https://cdn.sqhk.co/nonebizi/goyhdls/easy_way_to_decorate_a_cake_at_home.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://peluxatem.epizy.com/94773606481.pdfIn PDF document text
    • http://rivenoke.onlinewebshop.net/samelawedovotalato.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_off0000dd83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD83 5048 bytes
SHA-256: 624f4d236d57fe00ab4a9971660a01dc5220c5425b3534fe4ff7f4f8de808967
font_01_sfnt_off0000eeba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBA 10240 bytes
SHA-256: 2b0505939437ebd6c0899a3df1915209404a00a8bb15b8f595f97cae97f71b59