Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ad926eb7b34d71b…

MALICIOUS

PDF

62.2 KB Created: 2020-10-07 07:27:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 34ce83b85bc4e7a6e3eec19b139865ee SHA-1: 406499fb9687596dbcbea77a15af7da7f922123f SHA-256: 6ad926eb7b34d71b9c45870f4675425b8992a161deedd653453845769451004d
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://ttraff.club/pify?keyword=the+replacements+cartoon+characters In PDF document text
    • http://gamusuf.generatoronlinestore.com/uploads/1/3/0/7/130740537/xuwuv-judejisegis.pdfIn PDF document text
    • http://files.exploreandreconnect.com/uploads/1/3/1/3/131381241/rufovotinito_xalixuzovudu_dexegutit.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/4f2d203d-d809-48b6-ac95-4b0d1b2d0d92/27342730838.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74add4ea-46a9-40a3-986f-380f5f880473/popogulegisawofeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31edde44-17ff-45a6-a981-df9b5911b285/pafovus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1772334d-d645-4d49-81ca-9cab2ce210a8/50614235799.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ea76b19-86c1-445a-a74d-3b455a2bd18b/35844247331.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b147c8a6-820c-47b2-bc2d-db55b10abb11/37843533358.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa320267-1744-4864-9ba9-71c4f3ace122/49827387129.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1954e57c-678d-4e1b-8a75-587a43356fdf/limosarori.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/589b44c3-8eae-4538-a29b-c9bb38925748/luzup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcb0d1be-af5b-4637-9d90-550de95c5d22/xebugavo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b399762c-d077-4f0e-ad11-a4635cfa8dcc/wovomugulesapevunu.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 3

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_off0000b6f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6F0 5124 bytes
SHA-256: d49f12b4b76d92179d3194f9e2f0cea75aadcc87f20a8c86d67c556ca994321b
font_01_sfnt_off0000c82a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC82A 10420 bytes
SHA-256: 4d24ebd39cbb1b471fb2a5580ee00618c52ef9709839facc045c492c8ca23df4

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