Malicious PDF — malware analysis report

Static analysis result for SHA-256 adef645139b05c07…

MALICIOUS

PDF

43.6 KB Created: 2020-11-03 11:03:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 28868de36fc9dfa06a06f404a51a0968 SHA-1: f4ef72bd8f5fe1ec3f4e60ebd8a13250e04e1c28 SHA-256: adef645139b05c0736d189a415c9f2fc00cd23c8e851650d863a6979230497f1
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=ragtime+gal+song+original In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366388/normal_5f871d37dd776.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368953/normal_5f976192d5945.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383452/normal_5f8c83031934f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370076/normal_5f930849457c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378152/normal_5f8e1c9991d38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374715/normal_5f8cec8536a14.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/99071082-7cd3-467b-9ada-4c48a60f274b/dosajaw.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/cancha_de_voleibol_con_sus_medidas_y_nombres.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/8962/3723/files/bepetejigovudelalolulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9474/8573/files/53136515620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7160/5410/files/8140002271.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41a6f3cf-a55c-42fe-adfb-5e14e498510e/16764674810.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_off00006adf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADF 5012 bytes
SHA-256: c91930dc21e768de1240901220cf222835b55800e79da2fa9734d5e89bf021ed
font_01_sfnt_off00007bd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD9 11216 bytes
SHA-256: 2c0b032670f9220775e7f9a39b8694c1f872003b2baead105c9261c931d916a3