Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d3e21f065eb422c…

MALICIOUS

PDF

41.2 KB Created: 2020-11-03 23:03:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 4e8983e0e2b4f733c2a54b5912700a30 SHA-1: 2ad3f6b16787afe58b40dc097f53e1487ac57ae9 SHA-256: 0d3e21f065eb422ca4a54965d7800f1bf4017b07d44fdcdd85546650b978bfb4
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://gettraff.ru/123?keyword=how+to+play+backyard+baseball+pc In PDF document text
    • https://wilujogid.weebly.com/uploads/1/3/4/3/134347442/9b648148434f2.pdfIn PDF document text
    • https://bituxusod.weebly.com/uploads/1/3/4/3/134347303/57a0e691833.pdfIn PDF document text
    • https://fiwisiroveton.weebly.com/uploads/1/3/4/3/134339953/monunigoxexa.pdfIn PDF document text
    • https://nogomikosisodop.weebly.com/uploads/1/3/2/6/132681488/rizotexejipitojetul.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/zufaxepixiguxax/action_and_linking_verbs_quiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acf2f88b-496a-487d-b24c-bbead1d9d1d5/64632213143.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf3debb2-3a3a-4d3d-8b75-a061a0b7006e/interpretao_de_texto_9_ano_exerccios.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/luke_powell_ca.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d45f177d-6909-45bc-845f-02afc3e9e6a1/5._snf_trke_kitab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fe30a78-f1e9-40d0-a42b-ada0f481c0a3/nomesibajikup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72936df1-6bbf-4b5c-9145-81802e1f7200/venta_de_sillones_cubanos_en_miami.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bb4778e-053b-4f27-a57a-988565d9a30d/49757735774.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/axis_and_allies_1941_rulebook.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C74 5424 bytes
SHA-256: 539810e262fdd6ea853fd23a7e37ede69b7d310e97ee6f8854ebcab1bf57ecf9
font_01_sfnt_off00006f03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F03 11880 bytes
SHA-256: 82e7edb3a6584eee020f1612f9be3a1e83e8e89474a332a8707e3151a400a8d4

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