PDF malware analysis — malicious · a181f2d60cc2e570

MALICIOUS

PDF

54.3 KB Created: 2020-10-26 01:17:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: a48e2ea3a1f089176e40dbcfab050118 SHA-1: 654928af39eba9e4db417d27773425695a408721 SHA-256: a181f2d60cc2e57021d043568b132283d6e6513e182cb62938982f6b24619888

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://ttraff.me/123?keyword=cnc+router+3018+manual In PDF document text
- https://tejigenunonim.weebly.com/uploads/1/3/0/8/130813632/lidefofolilizelado.pdfIn PDF document text
- https://podesasi.weebly.com/uploads/1/3/1/4/131437149/1fe90.pdfIn PDF document text
- https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/wegowozuxujo.pdfIn PDF document text
- https://tezosarotijup.weebly.com/uploads/1/3/4/3/134305137/jivenitabujitul.pdfIn PDF document text
- https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/f3f426e4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388285/normal_5f90166ba5641.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389370/normal_5f8e70886a88d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4409102/normal_5f9287bdce533.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369164/normal_5f89088e682fc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365591/normal_5f86f8820800e.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/ribowexulo/92615073445.pdfIn PDF document text
- https://s3.amazonaws.com/degisapemifa/36357463607.pdfIn PDF document text
- https://s3.amazonaws.com/memul/somibugipupuxu.pdfIn PDF document text
- https://s3.amazonaws.com/pusori/fuzofetamiroxuxokekefo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0498/8593/7818/files/newtons_principia.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0500/3296/7830/files/pisitafi.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/taxonomy_of_educational_objectives_1956.pdfIn PDF document text
- https://s3.amazonaws.com/xovajukoxin/brinkley_apush_textbook.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00008156.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8156	5224 bytes
SHA-256: `053298b2b383e4acfc7aafb3fb8e3049f20b6e87509b543026c21d0496fef29d`
`font_01_sfnt_off00009301.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9301	10596 bytes
SHA-256: `1a117c251cbbf115744501cd17dc0165c7563e6c6249a052798c7e49d71f4465`
`font_02_sfnt_off0000b79c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB79C	16068 bytes
SHA-256: `9e1271d681207e96fe60c94df920a27091a957dc81e2614e9e6235263a34fce6`

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