PDF malware analysis — malicious · 16ce7d5562c9087b

MALICIOUS

PDF

45.7 KB Created: 2020-11-09 03:17:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23

MD5: d8d10ebc774cbf3fdc43abc57091b237 SHA-1: ca5ad50564ba853715997e6e7122ce61219c1df9 SHA-256: 16ce7d5562c9087b8c4a4247b8d7567b7624d2c81fb0a793435ca0b0023188e0

124 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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 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/123?keyword=in+the+womb+video+questions+answers In PDF document text
- https://niweduval.weebly.com/uploads/1/3/4/3/134349673/64cae30f4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4422144/normal_5f9a886149d68.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/zijivevip/topab.pdfIn PDF document text
- https://muruzog.files.wordpress.com/2020/11/the_novelist_as_a_teacher_summary.pdfIn PDF document text
- https://nomepap.files.wordpress.com/2020/11/jupusirodojugalusisotevi.pdfIn PDF document text
- https://wotenopofe.files.wordpress.com/2020/11/budixaw.pdfIn PDF document text
- https://s3.amazonaws.com/zetare/witenefuxokag.pdfIn PDF document text
- https://buverawuluf.files.wordpress.com/2020/11/exercicios_sobre_estrelas_constela.pdfIn PDF document text
- https://lodoxepal.files.wordpress.com/2020/11/reremuradivuvevedivogobid.pdfIn PDF document text
- https://vuxogomirus.files.wordpress.com/2020/11/9981271004.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_off00007202.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7202	5388 bytes
SHA-256: `d7d4f9b2ffcda2e228dadb7026a4a0066d8625be9ea3417643af8c2a0e7bae71`
`font_01_sfnt_off00008436.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8436	11172 bytes
SHA-256: `8522cdcd738f3554090e160717ba2817e7ed909af0ec9cdfb9ff374228f425de`

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