Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d567d4288693216…

MALICIOUS

PDF

46.6 KB Created: 2020-11-09 12:07:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 7bcb506d4cd74c2d8a8b7460f27be1f6 SHA-1: a9066be179693b52dd5cfc5d738af050a4238a87 SHA-256: 9d567d42886932165b4621858fe9d338a51d95f4e6d9c3efebfd295fd08dbf04
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=bump+on+top+of+head+normal PDF link annotation
    • https://rozazokosu.weebly.com/uploads/1/3/0/8/130813972/ralexuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450242/normal_5fa18f84de19b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366359/normal_5f87f81093a0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410217/normal_5f9f19ae01b43.pdfIn PDF document text
    • https://kogatakuzomaw.weebly.com/uploads/1/3/4/4/134444425/e2e82b2f.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/66bc3884-cd06-44ad-b71f-84e032143584/dewimepaxikixasut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dddd5103-16d6-485f-ad6e-112539bd845a/a_first_course_in_finite_elements_by.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d35f1033-e4c6-4f90-a7df-432da34d1f4d/como_descargar_halo_reach_para_pc_en.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d3d0a0d-0bc8-4a20-8c5d-7b6d99590c1f/61045637382.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/86078761263.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cce7cf07-6313-4c65-bbd4-7557078c376c/burlington_elite_volleyball_club.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_off0000795f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x795F 5152 bytes
SHA-256: b24f167305f6be014f0ecd900523e74bc411601eea08d30dad5de6bde416797d
font_01_sfnt_off00008abc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ABC 10328 bytes
SHA-256: 925db69d97f2b3ac5c75b33b3040d492e63217affd5c99f3ec223a1a653ad423