Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e620f113a33775…

MALICIOUS

PDF

45.9 KB Created: 2020-10-06 21:25:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7ab826efa25370584a97fd85c91270ba SHA-1: db5f9ee3e2c392e2edc2e0cea5430a7a328126e7 SHA-256: e8e620f113a3377577e46ea467a9a3c722977e94beaa717c8eb01f4c783ff7c1
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://cctraff.ru/strik?keyword=flowers+for+algernon+study+guide+ans In PDF document text
    • http://files.acpnutrition.com/uploads/1/3/1/6/131607331/e17be5.pdfIn PDF document text
    • http://kamejil.mcmintegrated.com/uploads/1/3/0/7/130739607/vubulivorukifigav.pdfIn PDF document text
    • http://muzasov.mytayloralexander.com/uploads/1/3/0/8/130873791/292032.pdfIn PDF document text
    • http://vadatu.scriptplay.co.uk/uploads/1/3/1/4/131482975/wakazidaje.pdfIn PDF document text
    • http://files.ikhtabirni.com/uploads/1/3/2/6/132682829/97df7a7.pdfIn PDF document text
    • http://wabeludut.meredithdada.com/uploads/1/3/0/7/130739173/1584069.pdfIn PDF document text
    • http://files.thedvguys.com/uploads/1/3/0/7/130739779/zerefufugozupaj-kotawif.pdfIn PDF document text
    • http://files.gicentralcatholic.org/uploads/1/3/0/7/130775130/4b6355a02a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/053933e3-ea84-428d-b4c2-20bd485f14fd/16977984603.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7348717-3826-433c-9540-7b7583aae001/najijelotariwilepude.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a5d35be-bea7-4e1a-ba2d-40055255faaa/jirivozelebusixew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5adad03-c5a3-499b-83be-43c53a93c453/5416247023.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60684991-93b8-4216-9d68-d51d323f3314/zovakapaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b36abea-bc9c-4f7d-85cd-2a586c28280a/fesuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/965d88e0-3999-4cb1-a1f2-2134258d8304/4311815290.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fa70f19-44ff-4fa4-af8b-eb788a5fc3f1/94869766499.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81774d98-72da-4bd3-a51c-c77c42daf39e/80176284567.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C0 5108 bytes
SHA-256: 9db425548fd4c4d379332874b6bbdae56cb3640372a10fe43bc0dc35689dcd25
font_01_sfnt_off00007a47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A47 10040 bytes
SHA-256: bbd30780e906f4351365135dd5a86602f4a860bbbadac8c47b3bcf1cfd636ae7
font_02_sfnt_off00009c83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C83 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

Open this report in the interactive analyzer, or submit your own file for analysis.