Malicious PDF — malware analysis report

Static analysis result for SHA-256 28deba0177d429d4…

MALICIOUS

PDF

44.3 KB Created: 2020-11-09 16:57:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 2c5cba94aaef996adeb1956f887ba8ba SHA-1: 1797de76e824125ad6d94fa3c9e80c0c8f4ed012 SHA-256: 28deba0177d429d454ef26c891b35807d3cb152e33ab96a99d77205e0a63a781
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://traffking.ru/aws?keyword=best+fins+for+bottle+rockets In PDF document text
    • https://fukituxepuronip.weebly.com/uploads/1/3/4/6/134605821/0c35cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375210/normal_5f8d3a7014a38.pdfIn PDF document text
    • https://solupezonideb.weebly.com/uploads/1/3/4/5/134597414/3905951.pdfIn PDF document text
    • https://vanawolibonute.weebly.com/uploads/1/3/4/3/134344109/efcc8701a0d1284.pdfIn PDF document text
    • https://veborikaja.weebly.com/uploads/1/3/4/3/134317734/lulurukako.pdfIn PDF document text
    • https://rukinedofixod.weebly.com/uploads/1/3/4/3/134348838/lufapetalapebapaku.pdfIn PDF document text
    • https://vabeliguteziji.weebly.com/uploads/1/3/1/3/131379360/busamoto.pdfIn PDF document text
    • https://falibapop.weebly.com/uploads/1/3/3/9/133997194/7ea50864b4bb2.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/190e9f6f-906d-44ff-b31d-3da06df580fc/kunexifisudusexokesixer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7b93b71-41e3-4b5e-b6dd-0ca9e90ca4e2/mivawenoxipojojurevogu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ebdbd14-b49f-4dca-9741-cb9ef1914c64/38929993528.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1a6532d-4880-4693-8b5e-6cc52a253bd7/83111530516.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0aa2daaa-8418-419c-abcc-4ea7763e11ed/shell_helix_ultra_5w30_pds.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/073caa6d-6f39-4297-b0c2-55c291087cd1/disney_couture_jewellery_collection.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80a4a41c-e46a-430a-a830-988634f61848/24391538303.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_off00006fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA0 4916 bytes
SHA-256: 865b74b1db68242b18b8efaeb59ec389408dcedb0723217f99f747d30d09331d
font_01_sfnt_off00008076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8076 10580 bytes
SHA-256: 98783233c5b38ae4423fd5a542d131d9ca0ddc7099f5d90a24bece49d8d055d5

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