Malicious PDF — malware analysis report

Static analysis result for SHA-256 7367ff2a5fa9d6fb…

MALICIOUS

PDF

46.8 KB Created: 2020-10-25 05:27:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 39429b2a80bf9ba08a66b47ce17c1119 SHA-1: 28e5b826cca0b11fdbb0bfc99bdd95c359871205 SHA-256: 7367ff2a5fa9d6fb77a61c2504531c5878501319ab0d42c4e0a7ef42bc5e0832
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.cc/pify?keyword=ford+fmea+handbook+4.2+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374852/normal_5f8bf40fc504a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370054/normal_5f8c589354f53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386335/normal_5f9127ce95f6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366305/normal_5f92781e5ccf8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368999/normal_5f9283408e867.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384817/normal_5f8d2be8a5c55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368494/normal_5f8f7542e6ede.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/1/0437/7686/8514/files/nemekadivobijidegegiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3042/7826/files/nia_700_dictamen_del_auditor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3182/9412/files/4395361982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9078/6469/files/befefuk.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/agrger_fichiers.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/lesivimesapikipusunoni.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/binomial_theorem_class_11_cbse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/195f5f42-5cba-4aa1-a362-0bc386bcbbde/88676070988.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db3b8d6a-c97a-40ab-bbab-d1749a60fa6c/puvomi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be5e9589-c326-4870-ad8f-8d107b1f750d/bomavorapudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/1428/3176/files/kizukazujomujemepinek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1877/9306/files/back_ups_pro_550_manual.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_off00007458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7458 5484 bytes
SHA-256: f6509d41dcc2e2123b84876e169cfa32664f515c55cf08f2c62cb564b10b5dc4
font_01_sfnt_off000086db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86DB 11552 bytes
SHA-256: 7f6c382a591ef31589e12f7956c19df84b679520a79b6d9fccec5a7a5453615a