Malicious PDF — malware analysis report

Static analysis result for SHA-256 d17e253507724a59…

MALICIOUS

PDF

43.7 KB Created: 2020-11-09 12:43:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 6cbdafea608d0c7672b0c6e098c5e030 SHA-1: b6737f98c72dc4e85001812cdad7edbc122c8fb9 SHA-256: d17e253507724a59ebdd6485050ea296ed07af568dc41e126d70e2d76df8ecdf
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/aws?keyword=the+complete+penny+stock+course+audio PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379964/normal_5f9f99f5a4c99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392649/normal_5f9ba54fd125f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366952/normal_5f87a220f2698.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372080/normal_5f9fce052e8cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401555/normal_5f95895351464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412160/normal_5fa02ce3827df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407998/normal_5fa1e7429cc2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407991/normal_5f96dac1c8ae0.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/fumiposamisur/ozark_trail_14x10_polyester_screen_house_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/revebejimifuxokedewuke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/172077c0-8f92-45a5-9908-24464efaefad/serif_photoplus_x8_free_download_ful.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/tenatezuxobedoladazoku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1aa51cd-7f38-4d11-967d-0c7b3a5f49d0/the_supersizers_go_regency.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/fibugelas.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_off000068e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E6 5428 bytes
SHA-256: 8c59cd6caa2f74277710c00002d699c3393541e2328f542436633c0d7632ac58
font_01_sfnt_off00007b39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B39 11448 bytes
SHA-256: 287bf7e2fa17671ea190a834a68a48738010fff17c1f446aa9a8cd88b3f60318