Malicious PDF — malware analysis report

Static analysis result for SHA-256 11f3038366c51e42…

MALICIOUS

PDF

46.2 KB Created: 2020-10-16 03:41:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: ae60703d2dbe99784ef31a9cca4e6ed6 SHA-1: 7df89b3896f049025c7fea1badccf7186410fb37 SHA-256: 11f3038366c51e42e432795c9d8fecc1aa5f92a52f65e6b068b9a2a01f129f35
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=poker+night+at+the+inventory+2+guide In PDF document text
    • https://pezopipowom.weebly.com/uploads/1/3/1/4/131406060/5c4dfafadeb37ec.pdfIn PDF document text
    • https://site-1041866.mozfiles.com/files/1041866/jenukebixukitidonusu.pdfIn PDF document text
    • https://site-1042783.mozfiles.com/files/1042783/wazofibawovijuraso.pdfIn PDF document text
    • https://site-1038503.mozfiles.com/files/1038503/resoraninuba.pdfIn PDF document text
    • https://site-1039143.mozfiles.com/files/1039143/76219656149.pdfIn PDF document text
    • https://site-1041609.mozfiles.com/files/1041609/kanda_sashti_kavacham.pdfIn PDF document text
    • https://site-1039804.mozfiles.com/files/1039804/zazurej.pdfIn PDF document text
    • https://site-1040376.mozfiles.com/files/1040376/12561197371.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e2d3425-6701-4b2b-970f-134d92bb12dc/kemekosurisiku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fce1638b-3b7b-4f97-9e0e-5641e0a4826e/sitavanaxaxur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a16d841d-f28d-40b5-ad0b-8fc9acd29002/lojofisufawaviso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89ba0d63-d283-48ed-bdf3-d50d9cb510bb/likusamezap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0241/2196/files/63174291671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3540/1633/files/sistemas_de_ecuaciones_ejercicios_y_soluciones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1704/3101/files/3d_movie_player_apk_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9477/9051/files/resumen_de_los_4_evangelios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3254/2369/files/paul_revere_middle_school_yearbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0557/7896/files/gawisijirefu.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_off000076ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76AB 5236 bytes
SHA-256: fbcdc4da734aae64ee7cf3a47d90773b7b342ff4f0c61ddd126e136ec00dfcc7
font_01_sfnt_off0000887e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x887E 10120 bytes
SHA-256: 08ea47db6fe889ca63d4d35448edd34ecc37a859d9084815bc491ee5580cf175

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