PDF malware analysis — malicious · 281834586c2c9137

MALICIOUS

PDF

35.3 KB Created: 2020-11-06 18:53:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01

MD5: 237d465f6f0b4520f47e84226716b7d0 SHA-1: 0746a856b535f073ade1f4740e15f3e43266cdef SHA-256: 281834586c2c9137ed33dc46c8612b9c26ccf3f69166dc5c06b2a13b4ff7822d

126 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
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=two+rivers+terminal+llc+pasco+wa PDF link annotation
- https://kekerisasil.weebly.com/uploads/1/3/0/7/130775365/52dadc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405899/normal_5f97ae3f424c6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454677/normal_5fa3ba81755cb.pdfIn PDF document text
- https://lutenidu.weebly.com/uploads/1/3/4/3/134398581/49e3cea4.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/dalava/71169447371.pdfIn PDF document text
- https://namepedof.files.wordpress.com/2020/11/12742194467.pdfIn PDF document text
- https://lagonepij.files.wordpress.com/2020/11/54369881304.pdfIn PDF document text
- https://liwozemevun.files.wordpress.com/2020/11/14585451259.pdfIn PDF document text
- https://kujubadogil.files.wordpress.com/2020/11/sozidibazita.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_off00004bf5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4BF5	5180 bytes
SHA-256: `4c1f7869b5528180ea27a21ff618f19e8bec89c6292613dab2ef549990b6413b`
`font_01_sfnt_off00005d8e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D8E	10356 bytes
SHA-256: `79e70e174592db70c249cd623fe12c19721636bbab98e0ca74790e50a5a8c579`

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