Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c7028f632cd85cb…

MALICIOUS

PDF

47.5 KB Created: 2020-11-07 11:00:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 396d0c5e9b828cba2374c5db919299c7 SHA-1: fa84e18b4a3f0701976747265b16f8a9e6821d1f SHA-256: 5c7028f632cd85cb45a267d8d6b4f3733ca7e0d1eac60ea284c3999b199fa2dd
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=arvada+west+high+school+basketball PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415767/normal_5f9a18072e53f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370275/normal_5f88fe7534752.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384469/normal_5f8c894d32b5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367296/normal_5f877d5c19da0.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/pesetufavo/identification_of_pathogenic_fungi_campbell.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a473985b-d615-4d43-9ccb-71353bd7fed4/naui_dive_table.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c12327d-9242-4d63-a24c-6564db4692cf/67777587581.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2ea4b24-585e-49d9-83ec-064f3e763891/physics_halliday_resnick.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/88259417934.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8957aab-27b2-4132-8138-870ff27e9c7b/65986336251.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/42742450660.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/44358410927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01b5fb06-3cb7-4af0-b97a-655b9e13b991/nadal_vs_federer_live_stream_wimbledon.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_off000078e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78E2 5548 bytes
SHA-256: 65a625a102489f6ad9f51c47f7dbb12ab416ed7ca173ed7866aeb2573ec33986
font_01_sfnt_off00008bcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BCF 10884 bytes
SHA-256: 15bec9c086a4cd63707ccd036ff963630828a1cf59b63987f42553f7748da363