Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3cce0eb27c61d55…

MALICIOUS

PDF

41.9 KB Created: 2020-10-21 20:58:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: fcaa8f420a9acc57609667b33410beff SHA-1: d7c43d30c8d3407836fce40f4a39f0c471da1e36 SHA-256: d3cce0eb27c61d55a4abbdbd867df6b035f73012ecb329fc31ec5ac9580622f2
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/123?keyword=matutina+de+ni%25C3%25B1os+2020+adventista+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370533/normal_5f8fd7e9bf122.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370092/normal_5f8910a19da56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369638/normal_5f8886cae1028.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375095/normal_5f894a3049fa3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367300/normal_5f87aba88f56a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379612/normal_5f8b31455acd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370056/normal_5f88d573da809.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371787/normal_5f8c53fcc0715.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/fibalosixerivapun.pdfIn PDF document text
    • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/1886305.pdfIn PDF document text
    • https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/5011088.pdfIn PDF document text
    • https://bijifejutumaxob.weebly.com/uploads/1/3/1/3/131381781/745fe9b.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004bb5.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004bb5.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00008a82.bin)
    • https://s3.amazonaws.com/xanebavifamopez/jarapemusukodigo.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/88309202114.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/tojajavizosuxur.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/71218731151.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 extracted file (font_00_sfnt_off00004bb5.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BB5 5340 bytes
SHA-256: 78c569c554139c00c131e269e4c1765903d9f388a3d9cb41b5c686f0234e0ec6
font_01_sfnt_off00005db8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB8 14452 bytes
SHA-256: 2fe1a57967ae70b6941204d0693bd8dd63a2b5bd8729de805f35ff36f6e336e7
font_02_sfnt_off00008a82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A82 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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