Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d536d4ff20966ad…

MALICIOUS

PDF

42.8 KB Created: 2020-11-06 13:21:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 655da22df378bc2bab4ccc75e69179e7 SHA-1: cc15950670f326dd8085d0db1e219aa10d8f49e5 SHA-256: 0d536d4ff20966ad8b128fd3717ed3781495141f43090b5c80b8ab2d268df871
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://traffset.ru/aws?keyword=copper+chef+power+air+fryer+instructions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417128/normal_5f9775d1e54d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377401/normal_5f89f4c97989b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369333/normal_5f9435ea3ba8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453108/normal_5f9fab962913e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374535/normal_5f8fba028f146.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392191/normal_5f924d8f28404.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383577/normal_5f9dd41456c68.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/a7ace30f-331f-4f94-ade9-747f1c402f8a/48313076957.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/ap_summer_institute_2020_arkansas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1280bc33-9d9e-464f-85ab-c8e25ed81495/wesasisajolupeker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f1c55fb-0c98-49e1-a244-2873480593bc/63250060591.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b105465-c825-42da-af0f-0d886ced72ce/12866052637.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df9fa1ce-a0a4-4724-a395-c68dab090eee/19527180755.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/autodesk_vault_professional_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bab20ad-44a6-47d1-858f-e475a7ed5898/harry_potter_catholic_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5164988d-fc18-42ac-9b39-19f1c0e9d6aa/96238240178.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/john_2_commentary_blue_letter_bible.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_off00006782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6782 5172 bytes
SHA-256: 77e7147a562b0b99294a40c27e788ba25d150d0b2e92fb76acdfdac5963923d8
font_01_sfnt_off00007928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7928 10792 bytes
SHA-256: 7ccecf17950bffaee706fafb1eadcb74c7819f9a616313dc72ff06e5811f76bb