Malicious PDF — malware analysis report

Static analysis result for SHA-256 eceb87eb85b79fab…

MALICIOUS

PDF

44.0 KB Created: 2020-10-28 20:10:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 001121ad415d4db43a5e8c8b0fd049e3 SHA-1: 2aeb047c71396839f493824e179dadff98b04b6f SHA-256: eceb87eb85b79fab78b0daa735153baeccab9380f941649b3ef6580b262fe85c
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=biofluxe+keto+300+mg In PDF document text
    • https://genamimiwovem.weebly.com/uploads/1/3/1/6/131636881/falojogore.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382617/normal_5f93881cd2c0c.pdfIn PDF document text
    • https://penopetidurip.weebly.com/uploads/1/3/2/8/132815040/pagigupeji-budud-titefovix-dukutosuxutebas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368762/normal_5f96e6ef748f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371800/normal_5f8eac93a31dd.pdfIn PDF document text
    • https://dokakida.weebly.com/uploads/1/3/1/3/131380589/5793afee29327b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367007/normal_5f964bc6602cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381302/normal_5f95a8b3bb90b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383791/normal_5f8f30c5a9320.pdfIn PDF document text
    • https://latenenagizogip.weebly.com/uploads/1/3/2/6/132696064/zamofoxev.pdfIn PDF document text
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/wesitelabupi-tejamogijunu-lakokimebu-jinemupokuxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388412/normal_5f9840dce4086.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/e070f9c2-16d8-4ab0-9aff-2e04486e827a/82175683309.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20f568f6-eb9c-46ea-b85f-ef2586b8532e/nodudabiliforidamevot.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/53112493779.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43a8fc2c-ba47-4443-b512-a654745f0e76/feromobijisoxopukimi.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/bhagavad_gita_in_kannada_format.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_off00006d98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D98 5092 bytes
SHA-256: 7e0b3b5227b958143048007fda41886cada4e3547dfa63d41aff0fe318fc45bf
font_01_sfnt_off00007ef9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF9 10512 bytes
SHA-256: ca08bd7a5f0673c137d9719ba17837cc255aa8d40e7cfeecb8fe68a9aa990d35

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