Malicious PDF — malware analysis report

Static analysis result for SHA-256 984a6144924b74b3…

MALICIOUS

PDF

43.1 KB Created: 2020-10-03 15:29:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fbddc6442818364b45f1d0f50db8d1b1 SHA-1: 6034108d43670be4cd2651d00248a0cd0baf273c SHA-256: 984a6144924b74b36ba7144d32dc4c5c7ff120eca4e9bd60a8406a428bda181d
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.link/pify?keyword=feminism+is+for+everybody In PDF document text
    • http://files.kwitoskiandassociates.com/uploads/1/3/2/8/132815388/fapuzinevixidasiv.pdfIn PDF document text
    • http://files.allistana.com/uploads/1/3/1/4/131437045/7115737.pdfIn PDF document text
    • http://zegezo.juliapittcoaching.com/uploads/1/3/2/8/132814261/2514741.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8583/7989/files/fracture_me_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5235/8039/files/90037122493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/2243/3686/files/their_eyes_were_watching_god_chapter_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1013/8017/files/13432448550.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1713630a-6a5e-4061-b2eb-b8bc6a560109/96162730267.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df985229-201d-4ed7-9831-a16a5bfbc805/60268112587.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2296af4a-c9d9-4c0d-becc-ad28e8b1935a/68593215288.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b76a2a4-8686-49f1-91ee-1c9a45a967b8/misitikozatozututabo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5d6b966-30a5-489e-89d8-b6150c05fd54/dezisevofotenetavan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e38b5883-b419-47f1-a306-48d30e887916/4049694083.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_off00006ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECF 5068 bytes
SHA-256: ef0817a625cd0051493297b9dece29e77efeaa5b0258272dbd16c5dbc3b3d833
font_01_sfnt_off00008004.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8004 9380 bytes
SHA-256: b54cea26a30529059c3930726f19913f161f936fc5f0a861cc6fdc168817b901

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