Malicious PDF — malware analysis report

Static analysis result for SHA-256 7539633266ef35b6…

MALICIOUS

PDF

43.4 KB Created: 2020-10-24 02:54:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1159bd1996e9b7402d63aac35596df9d SHA-1: b2dc84d2f60f863983a4f03a53c7406f100080f2 SHA-256: 7539633266ef35b68beed22688f80e26dfa4549a64a82bde7f864a40e210a045
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://ttraff.link/123?keyword=algarve+tourist+map+pdf In PDF document text
    • https://fifowekuvepu.weebly.com/uploads/1/3/0/7/130776735/divixuwomesik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383792/normal_5f8bc3859c791.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369911/normal_5f8fffb838661.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382421/normal_5f8c12a4ad0e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388181/normal_5f8fb46a72395.pdfIn PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/gufovuxalezoxa-dokavipem-rufibaposisaji-wujubudadewuzur.pdfIn PDF document text
    • https://segakimorepej.weebly.com/uploads/1/3/0/7/130738797/kumigazebo.pdfIn PDF document text
    • https://gudojovevisepu.weebly.com/uploads/1/3/4/3/134314990/domujexukade.pdfIn PDF document text
    • https://wurikosaradusif.weebly.com/uploads/1/3/1/3/131384544/mitewasi_tegad_nobotalori.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/4867245.pdfIn PDF document text
    • https://niliwuwez.weebly.com/uploads/1/3/4/2/134265541/8765231.pdfIn PDF document text
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/efb1a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368225/normal_5f8fd50ac3e92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f89c4f4ca3e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376625/normal_5f8eef9530b38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369328/normal_5f8890d655c64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378830/normal_5f8b98278f2bd.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/81b089cd-c1eb-400c-8976-4f771dce663c/despiece_de_cuerpo_de_valvulas_09g.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad14b3f2-d3e5-4ab9-809b-925a27173f88/3414534773.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7af742e9-6cf9-4004-be47-d9bb75d0eab8/24512529823.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5638893a-ce83-49ef-a79f-b271ea36087e/89363818882.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01a221e6-3263-4f35-8aec-f66793610dde/88856178594.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4E 5412 bytes
SHA-256: 3141bcac4073ab10acbf485db29ab6354418142cdefdaf2b15bbed9f00322c76
font_01_sfnt_off00007db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB0 10244 bytes
SHA-256: 3144613c31dfca98778263369d5587ca51b23f7f1f46f0481148e3abc2522367

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