Malicious PDF — malware analysis report

Static analysis result for SHA-256 93b49670a364af0e…

MALICIOUS

PDF

40.1 KB Created: 2020-10-11 12:28:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: ec75a6f02b444ca52b4f681a6798ddd7 SHA-1: 7b93606a3bdf76eb8c54236dfade45c5bbc3b3ab SHA-256: 93b49670a364af0e07c698fee9b4305ae4da9e7f49d84c584fe3dd530b1a38b4
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://cctraff.ru/strik?keyword=academy+of+management+journal+word+template In PDF document text
    • http://files.optiki.bg/uploads/1/3/2/7/132740378/ximoruzekorawaxolu.pdfIn PDF document text
    • http://dajimozug.echsafety.com/uploads/1/3/1/6/131637921/4797564.pdfIn PDF document text
    • http://files.wcbk.com/uploads/1/3/1/1/131164273/sugowazizisurosaj.pdfIn PDF document text
    • http://files.davesthoughts.com/uploads/1/3/1/4/131453496/vakisuwedetapok.pdfIn PDF document text
    • https://site-1040876.mozfiles.com/files/1040876/baresipo.pdfIn PDF document text
    • https://site-1037881.mozfiles.com/files/1037881/jamewabaxavozofi.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/fc6bab64-3b4e-4c61-b752-e3c7205c364d/keliperofituginodu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4c7c142-3ef0-484b-a6b1-1b1e9bdc937a/75879606479.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbb68961-f92b-4be7-b1b1-7417e2599c71/vedilanurapaxuwomav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2dc27e8-c533-41fd-999f-1aaa068aa913/64945884013.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f18a5a38-7945-45c1-84a1-eae932f1ca7f/bipisabubogebuwore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a018b5f-3983-40d0-80a8-7ab5ea60b91b/pijepumasedifusira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31d6cdf7-496d-4dbc-a612-925f140e72a7/42836554216.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA6 5556 bytes
SHA-256: e021c01cfeaba5a3a5b4e46f81d74dcf3eb5db0260a0127c3942e5d55f902d66
font_01_sfnt_off0000718f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718F 9916 bytes
SHA-256: 336285bde90ab298be75cef3d8b1aefcdfed455ba91050400e8df5f61bcd7956

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