Malicious PDF — malware analysis report

Static analysis result for SHA-256 009ca9737a34b0fb…

MALICIOUS

PDF

42.5 KB Created: 2020-10-16 05:31:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 6b8b278def22e0a87523dd9953be9c77 SHA-1: fac3d6be444e0216d165a9eceed0acfa8aaf84bd SHA-256: 009ca9737a34b0fbf6af0a9c56aad6f3c36c6524422c4198c4561d685fdd4a0e
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://ggtraff.ru/123?keyword=jpg+to+pdf+converter+resize In PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/a7013.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/dezidokezapovujiluwa.pdfIn PDF document text
    • https://sonilotosoj.weebly.com/uploads/1/3/1/3/131379329/7579313.pdfIn PDF document text
    • https://nagifinapu.weebly.com/uploads/1/3/2/6/132696111/liwixo_pavajow_nekotafixu.pdfIn PDF document text
    • https://site-1045331.mozfiles.com/files/1045331/gafofazaxitatovamoko.pdfIn PDF document text
    • https://site-1042104.mozfiles.com/files/1042104/difurisowavute.pdfIn PDF document text
    • https://site-1036868.mozfiles.com/files/1036868/14049922756.pdfIn PDF document text
    • https://site-1043288.mozfiles.com/files/1043288/85278127745.pdfIn PDF document text
    • https://site-1040259.mozfiles.com/files/1040259/fabolonatutopukogixi.pdfIn PDF document text
    • https://site-1043760.mozfiles.com/files/1043760/sekufokuvafox.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/1/0484/7481/6674/files/xokivoteteresugenad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/8873/0054/files/embedded_systems_architecture_programming_and_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3010/0140/files/23685924717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/the_crucible_sparknotes_act_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/5198/3263/files/76023003530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1131/8182/files/science_process_skills_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/2610/3451/files/wdbj7_weather_floyd_va.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7885/3807/files/jesiwegupebawaganox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14f03017-0df8-47ff-acd2-ec96d76a9477/22891139670.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d50cf666-6e9f-4dd3-bffa-ba8796dac73d/kamogiduxuwu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a917aace-0376-41e9-ae3d-c3b5471d62c7/52707020176.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8b24306-e84e-4287-9906-551b0c1dc0db/89155941642.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_off000067df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67DF 5180 bytes
SHA-256: c75b4120a9facb1eafb3be19bf6860b0f7f854877d0e69bdc6c15bf1c0ca4735
font_01_sfnt_off000079a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A4 10304 bytes
SHA-256: 30b067b84096b8eb9584ee123b85dff20d33c12ee0f800d882676bc4edc9da9e