PDF malware analysis — malicious · 23cc3935de29b959

MALICIOUS

PDF

49.6 KB Created: 2020-11-08 14:26:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15

MD5: 30c2e29898f6ce17a2c84313f12dd394 SHA-1: 38e4cee1c913872a9ea26c2f4f31a6b127176c92 SHA-256: 23cc3935de29b959a29b94fc3af277704836c70ed388764f917510e03d8eaf34

66 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
External URI info PDF_URI

PDF contains an external URL action
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://traffset.ru/wb?keyword=c++%20tic%20tac%20toe%20array PDF link annotation
- https://cdn-cms.f-static.net/uploads/4381543/normal_5fa27e598d4f3.pdfIn PDF document text
- https://wozofawado.weebly.com/uploads/1/3/0/8/130874325/doxub.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369316/normal_5f95ed4539dcc.pdfIn PDF document text
- https://weratirotiset.weebly.com/uploads/1/3/4/3/134322017/36818.pdfIn PDF document text
- https://zisokilusativ.weebly.com/uploads/1/3/2/3/132303079/jolurorixawejo.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/024723b5-dd2d-4aa6-a03d-c213e532707d/95574921010.pdfIn PDF document text
- https://xisevijako.files.wordpress.com/2020/11/89467292066.pdfIn PDF document text
- https://s3.amazonaws.com/genedonapubefe/targus_giga_ethernet_driver.pdfIn PDF document text
- https://nupovuji.files.wordpress.com/2020/11/cavendish_online_isa_performance.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/233d0a97-1aad-46ef-8f76-3a5ea970fcdc/vekapumibotumidiripovuvel.pdfIn PDF document text
- https://s3.amazonaws.com/jeworurowam/tifisewajonudapu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8df0f46a-e4b0-4936-8c5b-42d111ac8201/genie_morman_incest_family.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00007743.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7743	4588 bytes
SHA-256: `1d26d5c336ff6080c93324edffedf06835a7cc4a198217e1a31fa54abf53baec`
`font_01_sfnt_off000086f3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86F3	15716 bytes
SHA-256: `8cf19bef76d40f0dee67a176df943f941b724dbafbf896e20fb808179672f2d3`

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