Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca07b0e4462f4ac8…

MALICIOUS

PDF

51.2 KB Created: 2020-11-09 14:52:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 8c7ae954a5ba8351fb740e7c85c20f30 SHA-1: 8865fb59a78452537e8c0c9c52e3a42cfc40d68b SHA-256: ca07b0e4462f4ac8b8d580a9be8d4922211144ac2bcabc3cc9cd8652a73a4fd2
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafftec.ru/aws?keyword=badtameezdil+net+net+movie PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368485/normal_5fa6f87e7b79e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374983/normal_5f964cc3c6bb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414156/normal_5f95579449659.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385204/normal_5f8def55ee6a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447464/normal_5f9e46d138242.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/28fca80c-1aaa-4982-be40-b94478eb2749/80842423366.pdfIn PDF document text
    • https://s3.amazonaws.com/befevifa/kejefebogo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4746338-6455-49d1-b9f9-0c95212c6ffa/the_fillmore_charlotte_events.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/sopowogunopogobuxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2de4d54-8b5d-4fb9-b9bd-4d86b31f7114/macbook_pro_model_a1398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b532955-ba81-429b-94d5-03a518eee1a8/nokatedipegizusudunusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/742ac271-2751-4062-bf63-d65cca7de19b/nojarapup.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/8276318230.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a4abd9c-b66f-4918-9c0c-6c2c790093ea/guide_to_sewing_machine_feet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0d548b2-2558-4383-87f0-aeffee2f48ab/3505062321.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/alachua_county_arrest_records.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_off00007f97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F97 4856 bytes
SHA-256: e3cb758d75ee6fd43b2db20f8dc45f2c1fe94c9add09a5f2e2aed5d593678a30
font_01_sfnt_off00009019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9019 15064 bytes
SHA-256: f15268db10da4311c0ad790322b4c92de2b46bdd2377d41b50f9d49db0e07fb8