Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdcdecef5980fef6…

MALICIOUS

PDF

69.7 KB Created: 2021-02-24 14:36:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2949846e01f6391f2d62e23ecfb500e1 SHA-1: 040af41d8ae478c2f77c554ea0ee01812ab4f7b2 SHA-256: fdcdecef5980fef6d33e4795d6f1f6288416ebd79e2f602a114117609dc34a36
196 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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=the+firm+john+grisham+pdf+espa%25C3%25B1ol PDF link annotation
    • https://pebezudaxefen.weebly.com/uploads/1/3/4/3/134347708/1689771.pdfIn PDF document text
    • https://fewirikikekaja.weebly.com/uploads/1/3/2/3/132302896/purotagefedikel-gugezinapeg-sozoguw-pisaj.pdfIn PDF document text
    • https://redulexaxoxega.weebly.com/uploads/1/3/0/8/130874010/wepesuverenavizuge.pdfIn PDF document text
    • http://jarizodej.22web.org/bedubimuvujugazivafenu.pdfIn PDF document text
    • https://noxijinijomud.weebly.com/uploads/1/3/4/7/134746703/kezeralu.pdfIn PDF document text
    • http://midoponivejumod.22web.org/boyce_avenue_heaven_free.pdfIn PDF document text
    • https://cdn.sqhk.co/sunomedude/ihYihD3/neposazagazudovulul.pdfIn PDF document text
    • https://miremewokar.weebly.com/uploads/1/3/0/7/130738658/vekipaxibugamalun.pdfIn PDF document text
    • https://cdn.sqhk.co/fasotaluvose/RgjjjaA/art_therapy_license_nj.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/jinabom/transformers_animated_games_online_free.pdfIn PDF document text
    • http://fowowoge.rf.gd/kosawimosevuziduvenekajed.pdfIn PDF document text
    • http://fetavuxoze.epizy.com/gajukakivemuzok.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/devevitufeg.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/54036503878.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/agreement_to_sale_of_vehicle_format.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/davis_vantage_vue_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/sukapuk.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_off0000d02d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD02D 5692 bytes
SHA-256: f7044aae2bab105b65a4f73eda28a6e9e2ada1af9e847eab86179357bdebfce5
font_01_sfnt_off0000e326.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE326 10636 bytes
SHA-256: 06301540227890a7770916f7ea33a2e32325b22eedeb737ed62d94ba09b4f014

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