Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6d4abd7c745349e…

MALICIOUS

PDF

52.1 KB Created: 2020-10-26 10:21:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-28
MD5: 275ab2fcc6f7f6a07b11918dc87574fa SHA-1: 48a5fa7fa675b8529bc7d6b984182aeb2397e0d0 SHA-256: e6d4abd7c745349e783fe4c0211e90086f6751e0203a0754a899c3c3420ecbfa
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to the malicious URL https://cctraff.ru/wb?keyword=examples%20of%20nominal%20data%20pdf. This indicates an attempt to lure the user to a malicious site, likely for further exploitation or phishing. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/wb?keyword=examples%20of%20nominal%20data%20pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369671/normal_5f9598329c69f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391602/normal_5f920d487b519.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f8f2f9e01047.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380700/normal_5f914063c095e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375885/normal_5f8f6ee13bfdc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f873131aedf3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383137/normal_5f967bd451920.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381976/normal_5f90ccbb4174b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377379/normal_5f8e592d88718.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379473/normal_5f8bd8c234eeb.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/5f89635c-17c3-44bd-bc78-8348a5f4b37a/97360355717.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4837cc06-bc25-448b-a9be-77e3634c1164/meso_g1_relic_farm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb9a8ec7-ad51-42cb-bc4e-b499da96332f/phtls_8_edicion_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1abca179-3bb9-49f4-9eaf-5d4fef7b71f2/wibititomubarajarur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/533b34d5-95d2-413c-8a5a-82a2cd75f44e/luvenaworafaxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfa6763a-be7d-4e00-aa4c-e4842253b365/55284605461.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e89cafa1-94a4-4454-a922-e6316430561a/zuroji.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_off000089b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89B3 5116 bytes
SHA-256: c7ea950b16736cb7d9895255d8a88c1d4bf03501a47152cf90419668217fd02c
font_01_sfnt_off00009b15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B15 11760 bytes
SHA-256: f9aca7e4db913179ac9065176f7ed75ce016518806ead36efd990b4365025966

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