Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad8dc3270f286721…

MALICIOUS

PDF

38.7 KB Created: 2020-10-02 14:43:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 2b4db5575d3309be0cfa6563324baa96 SHA-1: 5d7823caece04663b3d9e3aadbeb9f436229da26 SHA-256: ad8dc3270f286721695ef1281fc526145801f1d2c4cc112ce1f6af30ca074ad4
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/strik?keyword=ember-pdf+js+example In PDF document text
    • http://kajetun.hammanrealestate.net/uploads/1/3/0/8/130814328/ligizifobez-tefosu-piselezosavosu.pdfIn PDF document text
    • http://files.mariannephinney.com/uploads/1/3/1/3/131380469/6620277.pdfIn PDF document text
    • http://dibopa.servicetrackandfield.com/uploads/1/3/0/8/130814328/wubuti.pdfIn PDF document text
    • http://jiwisuzi.ritzemaportfolio.com/uploads/1/3/1/6/131637921/lukegejitafi.pdfIn PDF document text
    • https://site-1039496.mozfiles.com/files/1039496/jamerusokilisiwuw.pdfIn PDF document text
    • https://site-1037279.mozfiles.com/files/1037279/56396746114.pdfIn PDF document text
    • https://site-1036939.mozfiles.com/files/1036939/nowupejero.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/6eaa42bf-f055-4b2d-921d-ea343a984f8c/78957755418.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/572b8f97-f7a7-4779-90e9-10ceee9b2414/gijatok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5005d476-efb1-49cb-a685-569a8a8d6c7a/72673389536.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acff4360-802f-4a5a-8d94-a1e6ceea1192/dovod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/156c52bb-f5d2-48f8-9e0e-b5638aec0ba5/novim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f156ba79-20d0-498c-9a17-e156cf60c6fd/45408051442.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3d30470-0faa-419a-a826-38a2c0254913/86730527478.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_off000057e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57E5 5460 bytes
SHA-256: 734ccf0f21a61f034cdc54be179b6fc1e43d7d6311aa845537b6cec86244692d
font_01_sfnt_off00006a66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A66 10768 bytes
SHA-256: e247498ce7c99483df95ace9198520740c4bdb555dcc6cad9f742cd9216fa11d

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