Malicious PDF — malware analysis report

Static analysis result for SHA-256 d25d069b7575fc71…

MALICIOUS

PDF

44.1 KB Created: 2020-10-14 23:48:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: dd984aa3787d64c97d764a45cad0093b SHA-1: 7ad5ad94546150f24ac28e0182ed60ef06038bd4 SHA-256: d25d069b7575fc71c7d3e16f5bdb174eaee6cd2196bb1fdb11d2a904de492026
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://ttraff.link/pify?keyword=harman+kardon+onyx+studio+3+user+guide In PDF document text
    • https://site-1037854.mozfiles.com/files/1037854/bodexezilexow.pdfIn PDF document text
    • https://site-1043668.mozfiles.com/files/1043668/97999371575.pdfIn PDF document text
    • https://site-1044163.mozfiles.com/files/1044163/xiluwigonosetufor.pdfIn PDF document text
    • https://site-1039549.mozfiles.com/files/1039549/ecotech_serinus_10_manual.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/da50c7e0ec8f483.pdfIn PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/kogog.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/jatelu-zukolugaw.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/1/0499/9525/1872/files/34606494362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5757/2761/files/99802232564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3964/5093/files/24219012840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/6479/9644/files/94477833104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/3655/9528/files/11806437153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/3754/4607/files/77372378759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9787/7408/files/comparing_and_contrasting_mitosis_and_meiosis_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9205/9314/files/68028840383.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c976a67-728d-4397-b89e-c732655411c2/4008897113.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/710e3c95-0bbf-4b3a-b657-1ac34e760806/16844107277.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0eff81c-f642-4d8c-aacb-7444990f277a/37237391819.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eed9b049-a849-431c-a784-005f5cceedc7/58740830413.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d556bcf-e3cb-43a4-aedb-66e09599534c/15495594811.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a2137b0-fe0a-449f-acb4-e90e694e05be/vonamelejiwapa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bddd3fe-53c6-43b0-af52-be066672aa2a/69952164903.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_off00006aea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEA 5472 bytes
SHA-256: 8bedbe8902fa66d8d0194da27ecce5182dd9de0b5919761e0b4bd61a878348ef
font_01_sfnt_off00007d7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7A 10516 bytes
SHA-256: f04fb6775fc13bba40bdfc840e0db8bc60439a091fe1af4ff1a8c9fc1aad39af