Malicious PDF — malware analysis report

Static analysis result for SHA-256 efa586577cad543c…

MALICIOUS

PDF

45.5 KB Created: 2020-10-20 10:47:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 545045064f880e40c89ec15a95a09de5 SHA-1: 572d34963e9cdad06fef34ecf97e6a8b48f32e08 SHA-256: efa586577cad543cbbcbc157a97310491dc4e7ae4fb5c6dad85f9b2d253efae3
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/123?keyword=banjo+tooie+witchyworld+jiggy+guide In PDF document text
    • https://batagokefo.weebly.com/uploads/1/3/1/0/131070859/01eaf358b8249.pdfIn PDF document text
    • https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/bugenofikox.pdfIn PDF document text
    • https://lagukekejase.weebly.com/uploads/1/3/0/8/130815031/1505414.pdfIn PDF document text
    • https://liwevapazu.weebly.com/uploads/1/3/1/0/131071299/ronewug_gafixunuv.pdfIn PDF document text
    • https://tiposowa.weebly.com/uploads/1/3/1/1/131164246/lirefikedunerodinoni.pdfIn PDF document text
    • https://dopuxaponaxu.weebly.com/uploads/1/3/2/6/132695391/2323367.pdfIn PDF document text
    • https://dudikojegak.weebly.com/uploads/1/3/1/4/131406444/700947.pdfIn PDF document text
    • https://nidixinaxob.weebly.com/uploads/1/3/0/7/130739699/a3fb7b8489d00a0.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/abee60c4ffd.pdfIn PDF document text
    • https://biwugina.weebly.com/uploads/1/3/1/1/131163984/vonisibem.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/e0dab314-7306-4984-8977-1d92f5b3b49f/totam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57985c87-b8ec-484e-94dc-da5796ecaf93/zufozexiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a99b1db-1c3c-4055-abfa-520b90bc763c/70379714216.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd9261bd-d9a2-420f-bc19-a2803d19a84f/majuxivajebudogetofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1977/9227/files/25356963441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9289/6663/files/guxotuzosobomevitadebim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/7942/3942/files/79784900737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2836/3439/files/guided_whitetail_deer_hunts_in_arkansas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5107/4204/files/carson_dunlop_technical_reference_guide.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_off000073f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73F8 5344 bytes
SHA-256: 9104a8c9bd964fdbe92ff11c18b8b2f7e311d673094d8508d1e5557df7205821
font_01_sfnt_off00008636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8636 10200 bytes
SHA-256: 18e31f5ac2deb8aef09ac99fc2255ce7745db1b6f132e3a9251006576a31da9f

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