Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c844a53d84330a9…

MALICIOUS

PDF

63.5 KB Created: 2021-02-14 02:43:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cdba326728b3457c6326effe8d710d9b SHA-1: f19c3d8468a8ce9845a7ce45081d028e8214992d SHA-256: 1c844a53d84330a94f6ed8ce3a9a962e0641cbb77493c55815fbba878ac3d0ba
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://druttle.ru/wix?keyword=renaissance+art+crossword+puzzle+answers PDF link annotation
    • https://cdn.sqhk.co/lakodatoli/jfiijjh/happier_ed_sheeran_piano.pdfIn PDF document text
    • http://mif-smeh.space/pelejozozibipupavo9f4l2.pdfIn PDF document text
    • http://organize.shop/20858653571gsg61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472208/normal_6020c0da05b61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426270/normal_60057ac88d410.pdfIn PDF document text
    • http://heymama.store/ximitemifesxaqw5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463263/normal_6001160f83710.pdfIn PDF document text
    • http://vash-fasad.live/8014535175d6ytc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455376/normal_60049817d70d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472491/normal_5fdace4bbb996.pdfIn PDF document text
    • http://trysoda.pro/tarelula6lfa7.pdfIn PDF document text
    • https://cdn.sqhk.co/viforoge/6lFihja/fafinivajivakonupabevax.pdfIn PDF document text
    • https://cdn.sqhk.co/xubupigegi/h43gdlR/62497005852.pdfIn PDF document text
    • http://opssmall.space/67939011856x0345.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381534/normal_5fe420c797712.pdfIn PDF document text
    • https://cdn.sqhk.co/woselukafo/8DWhejh/multiple_facebook_accounts_on_ipad.pdfIn PDF document text
    • http://leomannapov.com/noun_phrase_analysisa66lh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405414/normal_6005e8b6e961c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408333/normal_5ff04bce2dc93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420020/normal_5fd3bd6b67db6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000bd0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD0A 5216 bytes
SHA-256: 350a5e1683769ad87feb9c6583ca27c6ddc18ed844173e8b54ba2f40c6723188
font_01_sfnt_off0000cef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF6 9964 bytes
SHA-256: 028c4f37208d29fcb91c4d7d36e55424d1068ab7de740958b29b5be1a5bbaa54