Malicious PDF — malware analysis report

Static analysis result for SHA-256 2006e5d3a8a8baa0…

MALICIOUS

PDF

60.8 KB Created: 2020-11-14 00:23:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: e3d81850f16cb2745873a3a8430252b0 SHA-1: f797f19736aa8d1a4b16e16546b51a89676733ae SHA-256: 2006e5d3a8a8baa0626a8b92ae4e37fc8e2ee715bd7604bb4d5b7b425a329c4a
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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?utm_term=tecnologia+informatica+florencia In PDF document text
    • https://cdn-cms.f-static.net/uploads/4466379/normal_5faab44589dd3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374537/normal_5f9802fcdcef7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376380/normal_5f91d852dcd12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365576/normal_5f9cc12b36d8a.pdfIn PDF document text
    • https://zipazoraxegav.weebly.com/uploads/1/3/4/3/134325660/1403646.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444638/normal_5fa24c6be2230.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370762/normal_5fa2f2c635168.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373271/normal_5f9a4ae85482b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/subud/conceptos_capitalismo.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/balance_sheet_book.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/abrsm_grade_1_theory_book.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/42693452252.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/41961321186.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/cassia_occidentalis_medicinal_uses.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/to_kill_a_mockingbird_works_cited.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_off0000b05e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB05E 4972 bytes
SHA-256: ec4fb0e5712bab2524447576e9d854dbeaf1bf47fe8c6e38372c9ab4a9887c2a
font_01_sfnt_off0000c139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC139 10852 bytes
SHA-256: c9c3f8969ec0da5750a6b0ed7876f3d9cfc1004a1d1de470279bf23908053ce6