PDF malware analysis — malicious · 72496b63df422130

MALICIOUS

PDF

44.1 KB Created: 2020-11-07 08:55:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: f85f6758fb4408b0814fc54801ddc6a1 SHA-1: c622f6daed735818b4ebe7d3d6ecd0bf2bdf2f75 SHA-256: 72496b63df422130695bc5e1c15274557a98fdb6d1e8faddee98c522ca950f1a

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://trafffi.ru/aws?keyword=yamaha+htr+5740+manual+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4369494/normal_5f9e2bc54c0cb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388173/normal_5fa09ab496c4c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408983/normal_5fa62df487ad3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365551/normal_5f871ec86960e.pdfIn PDF document text
- https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/ludumijafimuzopa.pdfIn PDF document text
- https://rimosuvifakub.weebly.com/uploads/1/3/4/3/134310068/gugatofokutag.pdfIn PDF document text
- https://gorigopaf.weebly.com/uploads/1/3/4/3/134341526/wasiwobisidomas_jaruno_mupeduxemofe.pdfIn PDF document text
- https://luwigemo.weebly.com/uploads/1/3/4/5/134597726/manojibukiva.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://kaxemibewur.files.wordpress.com/2020/11/spanish_verb_conjugation_practice_worksheet_answers.pdfIn PDF document text
- https://nizowowe.files.wordpress.com/2020/11/midesifitir.pdfIn PDF document text
- https://s3.amazonaws.com/leguvefu/kedesilibadebedazaretasow.pdfIn PDF document text
- https://kemalomu.files.wordpress.com/2020/11/8757236487.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_off000062bb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62BB	5500 bytes
SHA-256: `a78b6a2e37ea6120275d5a77e70aa07de2a528dcc40f6e9ff5819d710e7b48f4`
`font_01_sfnt_off00007557.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7557	15088 bytes
SHA-256: `cedb693fec5c22bc654adf6175edc5a23dbffd71b76579896bd5d97eb466eb63`

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