Malicious PDF — malware analysis report

Static analysis result for SHA-256 088e6d5f5fc4cc6c…

MALICIOUS

PDF

73.0 KB Created: 2021-02-13 08:13:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ebc5078db8a035ec7b5488340a4c15e1 SHA-1: 49a5686132c40fa0895468e23857daf1f3966244 SHA-256: 088e6d5f5fc4cc6cfd4806d145bdfa6f395b5093062117fe71464f1f4ca7f058
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=lesson+2.1+inductive+reasoning+chapter+2+answers PDF link annotation
    • https://tulivugid.weebly.com/uploads/1/3/4/6/134607321/082d5e8cacd53.pdfIn PDF document text
    • https://luwupedo.weebly.com/uploads/1/3/1/3/131383743/mofuxob.pdfIn PDF document text
    • http://ledy66.net/tarepefogotobaketosoneriylf6f.pdfIn PDF document text
    • http://digitalmedialit.com/kamajnnezd.pdfIn PDF document text
    • https://rawekawus.weebly.com/uploads/1/3/4/4/134467784/a538809b.pdfIn PDF document text
    • http://axacheat4.xyz/84722260764e26o9.pdfIn PDF document text
    • http://indir-kazan.com/jilawegowukesaresuwaw34ylo.pdfIn PDF document text
    • https://cdn.sqhk.co/rudixika/hajdgig/pudodugapaxixawijejifasub.pdfIn PDF document text
    • https://pusexijubod.weebly.com/uploads/1/3/5/2/135296384/duride_datomizometufu_gegasivuwuf_xodabufupuzula.pdfIn PDF document text
    • https://jifonoru.weebly.com/uploads/1/3/5/3/135316211/4575671.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446507/normal_6023fa59ee890.pdfIn PDF document text
    • https://dujakoxuk.weebly.com/uploads/1/3/1/4/131483447/sakod_ribuzato_madep_ritidavuwonise.pdfIn PDF document text
    • https://vogovolakufa.weebly.com/uploads/1/3/4/8/134874318/8908225.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459929/normal_5fd6359ac61da.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/zamemigojat/voodoo_games_apk_pure.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/valkyrie_anatomia_jp_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/carabinieri_uniforme_nuova.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/geronimo_stilton_books_list.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_off0000e002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE002 5612 bytes
SHA-256: 1dfe0dcc44d5cea937a021be3f6dce9bdf9656697bf0d92ebbafb482162b7d45
font_01_sfnt_off0000f33b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33B 10368 bytes
SHA-256: 9db4ab7739084771002bc5b004637be610a9479e2c651fe3e11d7ba9412907ef