Malicious PDF — malware analysis report

Static analysis result for SHA-256 389988c2411b54f1…

MALICIOUS

PDF

42.1 KB Created: 2020-10-10 15:52:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 9507bf636e9faa577b884d400d017825 SHA-1: 6a29419a3d10639c3564762bf614277964e85d28 SHA-256: 389988c2411b54f136c33448db849ca3747a4b64b1a9cc415067684a60310e1d
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://ggtraff.ru/pify?keyword=quotes+from+a+long+way+gone+ishmael+beah In PDF document text
    • http://files.danaleipold.com/uploads/1/3/0/9/130969904/mifaposigup.pdfIn PDF document text
    • http://files.whiteplainslodge.org/uploads/1/3/0/9/130969056/8399152.pdfIn PDF document text
    • http://files.karenlouisejoneselementary.com/uploads/1/3/1/3/131384412/xinatipuruwuseta.pdfIn PDF document text
    • http://files.romeroentertainment.com/uploads/1/3/1/4/131437308/xifurakurelato.pdfIn PDF document text
    • http://files.ellisbrooktrainingcentre.com/uploads/1/3/1/1/131164372/gaxewudubevux.pdfIn PDF document text
    • http://files.planktoonfingerboard.com/uploads/1/3/0/9/130969192/wisowe-guninele.pdfIn PDF document text
    • http://files.emilynolanviolin.com/uploads/1/3/1/4/131453432/jitix_pewizunedimoj.pdfIn PDF document text
    • http://files.performx.shop/uploads/1/3/2/6/132683085/576cd4337a93.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/07ea02df-bd1d-4f89-8dd3-772133f11d9e/fazelufexavajemuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4be0566e-b935-44ca-9174-f6fb173e383b/vapegekizakiregimabota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e897940-7de6-48d8-9e48-507a653e0bf3/50382356130.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd267451-3f1b-4c11-9078-6443c1352e99/nefaza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8a0fa5a-74dc-42b3-af9c-28ca8f877768/tejikosezomugo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dca1454-ca3e-4dac-89a1-3178b0fd7678/31891323148.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04143ae3-6d4b-412a-b303-174875dc8f76/todiwinufibuxenewuraxatud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71836ead-e9c3-42bd-af53-b6ef27a1b1a4/39358647149.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 8

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_off00006614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6614 5576 bytes
SHA-256: 7dd371f53ff5903b4181b4fbdeabefe8119706621accfdd7179b392ee4101810
font_01_sfnt_off000078ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78EE 10232 bytes
SHA-256: f6959d07006dd9268a2d491a123db708f6742a80a948eb9b25dcd0f72de5f998

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