Malicious PDF — malware analysis report

Static analysis result for SHA-256 475c9bcfcdecd4c0…

MALICIOUS

PDF

35.2 KB Created: 2020-11-06 03:22:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 8e29b22ca0b285e6b921c29b2633cb8a SHA-1: 707c0092b650fd3a738e7aed0598590f51d1c842 SHA-256: 475c9bcfcdecd4c09fe14c5950c57167a214ff8a0d74c500460beb7bf4b2f57b
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=instruction+manual+for+brother+cs6000i PDF link annotation
    • https://fixasamajiwige.weebly.com/uploads/1/3/4/3/134318971/4943260.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368985/normal_5f8c528cc224b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413973/normal_5fa48026404f6.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/rebesudanolo/88388845315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2006/6209/files/gangstar_vegas_mod_apk_revdl.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/terri_jones_csn.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/sea_isle_city_nj_rentals_with_pool.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7787/0792/files/52232770550.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/lowuvepevunatimogonuxoz.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/fortnite_build_simulator_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/82645328194.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_off00004a08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A08 5492 bytes
SHA-256: 02dcac2c93573a7fb609c2db48e79956604d17c35e13ad9f589efe6a0df4c373
font_01_sfnt_off00005c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C86 10524 bytes
SHA-256: c92ebf5e92911f355fe837708bb880c44abdea3027875c21a281155fde711e68