Malicious PDF — malware analysis report

Static analysis result for SHA-256 7abfda5c061dcf40…

MALICIOUS

PDF

60.4 KB Created: 2020-11-01 21:10:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: d6445329e085ec00c644a25d69abcb5c SHA-1: 34af68e2785d0ae350cb24ed29cb8e8c83988cd9 SHA-256: 7abfda5c061dcf40979372878f5012c98d5865eb41769ba74937e79ebb4e8574
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/aws?keyword=tengo+ganas+de+ti+pelicula+completa+hd In PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/xekena.pdfIn PDF document text
    • https://morozosewiveloz.weebly.com/uploads/1/3/4/3/134387595/e6bbb.pdfIn PDF document text
    • https://zubisixoligifi.weebly.com/uploads/1/3/4/4/134479514/xosixero-fomoxoxibubosu-paken-wived.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/numegubowalonan/lusozuwolopumivekeganox.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/el_amor_de_dios.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/xinejadageka.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/archimedes_palimpsest.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/guzifijepirifiraluwuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/3825/8326/files/motosowofo.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/a_golden_guide_birds.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/budget_2019-_20_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/the_tempest_folger.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/goxejamegenofewapifigive.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8232 5224 bytes
SHA-256: 07ef249b9df07ee5e73ef763dbbe962c9416d8ac6173f9d7bcb9bc01e3e90aa5
font_01_sfnt_off000093c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93C8 12324 bytes
SHA-256: 04ba5dfb7e075c022c8716c559a2bcf9bcf7be92a43ae1a67d0d22703e679896
font_02_sfnt_off0000bc4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC4F 16904 bytes
SHA-256: b66394b6fa7751ff45f3085cc3bde4847bf9d9a83d0d717e40bfeca0790707d5
font_03_sfnt_off0000d3f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F7 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34