Malicious PDF — malware analysis report

Static analysis result for SHA-256 78227c352aa9667e…

MALICIOUS

PDF

52.5 KB Created: 2020-10-02 10:06:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-16
MD5: f0766acb6608a9526b29d6c846559b82 SHA-1: a4fa62b85b31eca548de6cfb38edbb94ca5e44c0 SHA-256: 78227c352aa9667ef68205b9792d495267cb8f95170ce27efae2889915acabfc
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/strik?keyword=street+value+focalin+xr+10mg In PDF document text
    • https://site-1037224.mozfiles.com/files/1037224/38832228233.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/1/0481/6587/9957/files/mmd_model_maker_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2195/1391/files/the_handmaids_tale_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0549/6472/files/mtg_throne_of_eldraine_release_date.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/5676/3558/files/82377355429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0791/7729/files/taropexogon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9961/1555/files/density_mass_volume_worksheet_physics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d04bb5f1-0d0f-4eca-8ccb-0536b0b478ac/kanezerijexivunigilam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/757c439d-4efc-45ef-b103-44dddbdbb818/77684536036.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a241a7f-5967-4f5b-a112-49927117cc1e/telesabawule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13f41a08-2143-4931-9d3d-a1fb7498cecd/pojumozenelobor.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_off00008fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA7 5448 bytes
SHA-256: e082c3d017597ca227db98b0d9cbe9fded8e807be18fc1135033cff386509f59
font_01_sfnt_off0000a22c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA22C 10376 bytes
SHA-256: 334decf538347f7c6cb04d00355b72cc4a1349c462ddc5d0cda74309d492a990