Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d34b95000e435c3…

MALICIOUS

PDF

42.5 KB Created: 2020-10-05 09:04:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 11ad0e8f7a473d4f3cdbc5511d99d015 SHA-1: 9c1cdcc5c30bedc6eaf9c61b3824a94fd62480f0 SHA-256: 0d34b95000e435c3c2e883f9cad40d225813c3170a6c2b9a922d421984ffcdc1
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.link/pify?keyword=community+christian+academy+pinellas+park In PDF document text
    • https://site-1038958.mozfiles.com/files/1038958/35969103613.pdfIn PDF document text
    • https://site-1038952.mozfiles.com/files/1038952/5207039494.pdfIn PDF document text
    • https://site-1036925.mozfiles.com/files/1036925/xefinulixufaras.pdfIn PDF document text
    • https://site-1039608.mozfiles.com/files/1039608/pagutazokolifir.pdfIn PDF document text
    • http://files.fauquiercommunityband.com/uploads/1/3/1/6/131636618/lerakukem-pudoxag-mivuzan-rokipuniwoj.pdfIn PDF document text
    • http://files.mohinisblogs.com/uploads/1/3/1/3/131384359/ef9bc0.pdfIn PDF document text
    • http://files.vintagemagnet.net/uploads/1/3/1/4/131455024/nimebivifono-sugen.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/b88e3d63-4d4b-40b6-86fb-583b232876b6/56880567783.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a11942b3-dc82-4bfb-9605-d6812235a72b/lirofaropisaxobup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73f34271-e825-4c0a-9418-635caa180fa5/xevemabipugiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54d4918e-0002-421f-ae57-132239f70af8/88742782005.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dafdfc6e-9298-4235-9253-e20f49f593e8/nakoxodemedobudumapawisas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2a149af-31d8-4bf0-98c9-d85b4d711ba5/zalinebivunidirekoze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d86edd41-5ba4-459e-8bdb-9edda45ad21d/20661223763.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac312a8c-9d9b-4271-bc06-81df8542c4f2/muzenotibomupibufivemaxix.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_off00006747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6747 5384 bytes
SHA-256: ff53379bceeac180c0e2b238b9ff48caa46b6f3ac0b07b78088dbb45dc27cb20
font_01_sfnt_off00007973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7973 10520 bytes
SHA-256: 86bdc56703ef698dfa88ddac05fb3b02e86b8b98425cf5a4577d2472462f89e3

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