Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e01544f868a760a…

MALICIOUS

PDF

37.7 KB Created: 2020-11-08 03:37:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 750fc795f16e3d538ecc32c3afc205bb SHA-1: 0beb8edda1cba6bf50986f2ab72fd2d814456f8d SHA-256: 3e01544f868a760a3d2961d81fe2b58b622def949bf7e6255be5970f27fd333b
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://traffset.ru/aws?keyword=words+that+start+with+a+w+in+spanish PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421329/normal_5f9904b5be214.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376362/normal_5f8c4b3ec7424.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/19388763-443e-404d-b8eb-bc3b4691a1e7/reader_s_digest_complete_guide_to_sewing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b062ca1-efb9-4e31-b055-c3fb7dd75b10/18840511933.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/libro_berenice_edgar_allan_poe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d876f4c-202c-4639-8ae8-c9297630e5dd/vapemivebogagizij.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/evogen_supplement_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/nokota_horse_ranch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d222f267-f26c-46ae-9ef2-e0596d327e6a/cube_outline_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/numeros_enteros_definicion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14898b87-193d-412a-a576-f5572827333c/morutakinugusejejer.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/intermediate_spelling_inventory.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_off000053ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53AD 5120 bytes
SHA-256: c4d1e43780f9a3924c0c8a003aec7ffe73d479c05c5910fb239df5eb6bf1b139
font_01_sfnt_off00006528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6528 11240 bytes
SHA-256: 594ead6fd20405248ec480fb28576489c3d6d1a7d33e83cd7a845924c5cee670