Malicious PDF — malware analysis report

Static analysis result for SHA-256 30c011664eab2fa3…

MALICIOUS

PDF

39.6 KB Created: 2020-10-02 11:29:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 2e5e22bd2f960e1f3fe84237f9ffdbdf SHA-1: f43ba27f0e0ed1eac78f87d0c3b5356904ffc827 SHA-256: 30c011664eab2fa3fe38fcac8986543bd01abae5d8ec44aa21995d0b8c4ec140
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://cctraff.ru/pify?keyword=simplify+radicals+worksheet In PDF document text
    • http://files.livingbalancedesigns.com.au/uploads/1/3/0/7/130740049/bosipeguzafigugijaxa.pdfIn PDF document text
    • http://files.easternontariowines.com/uploads/1/3/0/7/130738861/7e942393f6d5f.pdfIn PDF document text
    • http://dugisola.christchurchbabylon.org/uploads/1/3/1/0/131070381/b2114ee.pdfIn PDF document text
    • https://site-1036965.mozfiles.com/files/1036965/98941312675.pdfIn PDF document text
    • https://site-1037088.mozfiles.com/files/1037088/80206123703.pdfIn PDF document text
    • https://site-1037187.mozfiles.com/files/1037187/jimujisaletekedetamek.pdfIn PDF document text
    • https://site-1036814.mozfiles.com/files/1036814/fomewipabagufabativegazan.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/1/0429/7277/4556/files/ddo_monk_gear.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3992/7703/files/ccna_routing_and_switching_complete_study_guide_200-125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9761/5253/files/gemini_tv_live.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0213/3667/files/juketajizuponaxiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a67c756c-fc61-46f1-bf0a-20402994ad29/bilanuvuxesila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f878cd53-7c16-480c-abad-e51682f1a4dc/xutesepekupepanagoduru.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_off00005c45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C45 5756 bytes
SHA-256: fef20a9b881a5f6a8b0e27797b77d24617e6c3152c4f681d0ecec11d645ac8c1
font_01_sfnt_off00006fce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCE 9968 bytes
SHA-256: 926cb48847d3504951ae89f951cb7dc6ea3c13ba79e2126d4a094a117d503bfe