Malicious PDF — malware analysis report

Static analysis result for SHA-256 83f5be4e2dad4b5e…

MALICIOUS

PDF

40.1 KB Created: 2020-11-05 19:08:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-18
MD5: 80e212ed786bc4f7b59e814815480079 SHA-1: 7b4e19b5fa08b6ab4307c850e6b13095c5045151 SHA-256: 83f5be4e2dad4b5e3c0ec2928908934df22a0c55e1a7c9abd5ebf1455543b4f9
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://trafffi.ru/123?keyword=crystalis+walkthrough+locating+north+mt+sabre PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370062/normal_5f8837a870c65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373259/normal_5f986af2701a8.pdfIn PDF document text
    • https://mepopuwiv.weebly.com/uploads/1/3/4/4/134499337/ziwimofatubuvime.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379384/normal_5f8b22820fb51.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/9d84cd4d-0185-4284-b195-7aea51a87be4/ken_park_2002_full_movie_online_watch.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/certificate_of_good_moral_character_sample.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99747b67-e6ec-4cb7-b8dd-72b3bb0f4cab/kiwokulupota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/559d4792-0cb4-47e4-a44e-0e4cb90fe1d6/eragons_guide_to_alagaesia.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/gold_mangalsutra_designs_catalogue.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/50692124126.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeabb9a3-4163-4b23-bd6d-c6a411176924/jokoforafitigususatutizit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f44ede05-62bb-4dbe-a1ee-1399f96de9e7/diseo_y_distribucion_de_planta.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_off000060bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BB 5516 bytes
SHA-256: 90a10871db0a4e33037949261b497cb04654f3e7280a6e83dfcc9acae9907b7c
font_01_sfnt_off0000736d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x736D 9372 bytes
SHA-256: d7ca80e441e0468f046f8e8b9b112dbf35c77b448dd335bddbf935826e40525e