Malicious PDF — malware analysis report

Static analysis result for SHA-256 30145ea9a4fe978e…

MALICIOUS

PDF

41.2 KB Created: 2020-10-04 15:51:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0f87099d0c5c3892339f0e121f2ac7d8 SHA-1: f6f05d8b2ec33af5d33c18bc70873c260a5089d8 SHA-256: 30145ea9a4fe978efdda027dca728a1d99a7b708253e0d359d07950af6873c19
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://gettraff.ru/strik?keyword=pokemon+let%2527+s+go+pikachu+rom+download In PDF document text
    • http://xapivovut.spsyc.online/uploads/1/3/1/6/131606218/xegenag.pdfIn PDF document text
    • http://rurisov.sportsmanscovefl.com/uploads/1/3/1/6/131636734/puxuluza.pdfIn PDF document text
    • http://paxugobos.shopbudasreddoor.com/uploads/1/3/2/8/132814170/laxosotili.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/aa078686-7e83-4654-9ee5-dfa1aa12cc67/33240832096.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c453df30-c074-4a92-9b83-7214b4548f2e/47635586092.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5498ae5-75b4-4e95-bcfb-30b92ff71c6f/fiwojopuwilipiliwilefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42e04d12-1ebe-4ceb-bc41-8d3ed183beb2/wamukederobabodox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4cec097-bc41-4531-b20a-a4a2baedf6e0/walegazep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b6cdc86-8e69-4f0e-91b0-0fc668a3c04c/37842781793.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1f6dc40-d903-4791-93a8-4db2915bf415/rodudegabetifumobatosemav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f88b8f96-6daa-4a08-9a45-3497a2718bda/benoxumubufovewurebexes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/338654ec-2399-4218-931c-f40fd15a9298/25871125122.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63d9c4bd-b764-4c8e-9d72-489f65adf5cd/23168272906.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_off0000610a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610A 5676 bytes
SHA-256: bf5c5e68e8c3f2fc605b2e13c6cc76bc5103f0dad23ab8c6dadae2624ea5415d
font_01_sfnt_off00007450.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7450 10528 bytes
SHA-256: 0c1cf3d44b9e5fde92a00eea3a7e1ed23960bfe279e752a9c65c7b6a00d6431c

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