Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eb94778c364c52c…

MALICIOUS

PDF

49.4 KB Created: 2020-11-01 08:59:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 5b6c803a7b4c856e949895a083e770d2 SHA-1: 639c50cbfdc1d7c43b5082d2032959d743391e7d SHA-256: 3eb94778c364c52c697da6bd56b51fc7c4be7ff8bf0cecf0f0d9be0645f16184
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ttraff.me/123?keyword=types+of+chemical+reactions+lab+14+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374688/normal_5f8d70cc7d429.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366969/normal_5f87b2e41f36d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/nawosineromigi/english_grammar_checklist.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f621951-d8a3-4bea-badf-564bba2f45f6/lotesojitoketa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e87fa6fa-a032-4b6a-b17b-f8cb622547a0/21817663693.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/11287823725.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bccab55-1d39-4dd5-acb1-85e283abe290/siddhartha_socratic_seminar_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/drawing_tutorial_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/713ec1cc-39a9-4493-ae40-1efe5467d0dc/wisoliziriveguxapur.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/llenar_solicitudes_de_empleo_en_linea.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/ramavoruzadogejasaw.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/lolubupiluvi.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/puxazoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/843cb009-c881-4360-992d-629303e5ccbd/40261161613.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7298 5468 bytes
SHA-256: 010f4e6ae6ff0f1302e04f53389bc89f7b63ae5f7dbc154d1fa8a0cae5a6a253
font_01_sfnt_off00008521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8521 10880 bytes
SHA-256: 57f03b8009a1cd9a45b1903ca91d9ddd8cd5f040591ee4916b7192bc41ea9596
font_02_sfnt_off0000aa6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA6E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.