Malicious PDF — malware analysis report

Static analysis result for SHA-256 f75246db8c15b19a…

MALICIOUS

PDF

72.4 KB Created: 2021-02-12 04:46:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 705b0f70abb4976bf22bdeb6a6515e23 SHA-1: 6dec10b957ae4151a927cc8464945ca924d5cc7b SHA-256: f75246db8c15b19ae9c36df126cb3421511514a59401fa52e7820ca72799e2fe
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://druttle.ru/wix?keyword=cage+analysis+template PDF link annotation
    • https://cdn.sqhk.co/famuxina/jijdJhj/komajiwabanikugeluxaxef.pdfIn PDF document text
    • https://cdn.sqhk.co/pufowuvikij/jcggpjh/mallard_ducks_for_sale_michigan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450719/normal_60110ac42ce00.pdfIn PDF document text
    • https://mekebibarefuj.weebly.com/uploads/1/3/5/3/135335096/boxelojeravilex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421957/normal_6015e318e244c.pdfIn PDF document text
    • https://nojabepeteguki.weebly.com/uploads/1/3/4/6/134669956/varepax.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/didMgdI/football_card_for_sale.pdfIn PDF document text
    • https://maselevajaf.weebly.com/uploads/1/3/1/3/131398143/beneb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486535/normal_5ff68dd3281d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481841/normal_6004fb29722de.pdfIn PDF document text
    • https://tolajugim.weebly.com/uploads/1/3/4/6/134647220/cec8f4823096a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393488/normal_5ff5f6e98a9dc.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/gjfjcjg/ios_app_store_download_for_pc.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/bajapovogam/aagadu_movie_video.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/personal_budget_spreadsheet_template.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/88675010903.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/whatsapp_auto_sender_apk.pdfIn PDF document text
    • http://kupikobu.epizy.com/airbrush_apk_full_version_free.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_off0000dfa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA7 5052 bytes
SHA-256: 2ad1953919165b17e7f80014b0df0729f53732c7359300d3ae930b720bdc3c62
font_01_sfnt_off0000f0cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0CF 10792 bytes
SHA-256: c9725942d4f84da03bce6c8bcfbf6f6746d9f08fc247cccc6d4db055413dfbc0

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