Malicious PDF — malware analysis report

Static analysis result for SHA-256 e04bb6473a000934…

MALICIOUS

PDF

68.2 KB Created: 2021-02-19 01:54:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9dbebc74f045b421a05960ec5965e757 SHA-1: 64d1f7142fa137b9f821ae006d0769916673ced7 SHA-256: e04bb6473a000934ceb5eb89f1a6248b5e1a19d44e812afa8c2b186ee976aa98
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://leonvi.ru/wix?keyword=go+math+grade+5+practice+book+answers+key PDF link annotation
    • https://nefufepaxesa.weebly.com/uploads/1/3/1/4/131453268/456060.pdfIn PDF document text
    • http://2gusevshop.space/night_agent_i_m_the_savior_redeem_packagenxj1v.pdfIn PDF document text
    • http://reduslim-italiaufficiale.site/69933663367ex9j7.pdfIn PDF document text
    • https://cdn.sqhk.co/zetikitor/ie27hb0/xufatiravogajopo.pdfIn PDF document text
    • https://modevidiwuwos.weebly.com/uploads/1/3/5/3/135318048/1977c.pdfIn PDF document text
    • http://afracheat1.xyz/163885817868parj.pdfIn PDF document text
    • http://fresh-ita.space/83724564342rhiv0.pdfIn PDF document text
    • http://mgacessoria.online/yiruma_kiss_the_rain_violin_sheet_musicrk1k7.pdfIn PDF document text
    • https://pakajifovajopif.weebly.com/uploads/1/3/1/6/131607230/wapaginozopedopuke.pdfIn PDF document text
    • https://noxagutut.weebly.com/uploads/1/3/4/4/134483949/nudegufidup_mumidozomuxabav_mokadulowozem_zuxogava.pdfIn PDF document text
    • https://mezovojexojija.weebly.com/uploads/1/3/0/8/130874002/817909.pdfIn PDF document text
    • https://cdn.sqhk.co/nulogoxeja/jghCyhd/vr_math_games.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/bisiku/rabajada.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/organizational_behavior_chapter_2_quiz_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/jepefogepokafubanidikib.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/11757715408.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/abcd_tamil_movie_songs_free_2012.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/3d_printing_models_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/75515304391.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/70390180006.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_off0000cc6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC6B 6008 bytes
SHA-256: 0c8af3d24c4fed84eaeba78005ad0c0511289fba669df9d92c59ab89b6c6e64d
font_01_sfnt_off0000e0c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C2 10104 bytes
SHA-256: e31e01d2648d84d0d29ffc466e6588041aba3f04cb66bcc8ef256ec7798cc659

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