PDF malware analysis — malicious · 3d1ea1f90b763e88

MALICIOUS

PDF

35.9 KB Created: 2020-10-02 07:11:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15

MD5: 1435c2c971964cc07116ff99a7b80b30 SHA-1: b7449646ac234a9d9b461efaaa0ec2ab83028767 SHA-256: 3d1ea1f90b763e88b53e79f763b6774c98ffa8a617e6980f2b0c0d5631877ad5

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://cctraff.ru/strik?keyword=chinese+medical+qigong+therapy+a+comprehensive+clinical+guide+pdf In PDF document text
- http://files.charlesrivercenterroadrace.com/uploads/1/3/0/7/130775509/6274245.pdfIn PDF document text
- http://files.lagalaxyschool.com/uploads/1/3/2/6/132680813/zujibuw-valapafafab-sowowivefoku.pdfIn PDF document text
- http://gaxan.illianagymnasticscomplex.com/uploads/1/3/1/4/131437364/venepifipedifasi.pdfIn PDF document text
- http://files.bhutanmindfultravels.com/uploads/1/3/1/6/131606179/1540722.pdfIn PDF document text
- https://site-1039885.mozfiles.com/files/1039885/60606497380.pdfIn PDF document text
- https://site-1036785.mozfiles.com/files/1036785/bapigeguwojopirumij.pdfIn PDF document text
- https://site-1038631.mozfiles.com/files/1038631/pusefupuvoxixuserob.pdfIn PDF document text
- https://site-1037138.mozfiles.com/files/1037138/81042121950.pdfIn PDF document text
- https://site-1037003.mozfiles.com/files/1037003/bujomav.pdfIn PDF document text
- https://site-1037077.mozfiles.com/files/1037077/41973882159.pdfIn PDF document text
- https://site-1038872.mozfiles.com/files/1038872/zubupuwafexokapuje.pdfIn PDF document text
- https://site-1037920.mozfiles.com/files/1037920/29442167425.pdfIn PDF document text
- https://site-1036880.mozfiles.com/files/1036880/6644518728.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/2393/9237/files/hk401b_gyro_anleitung_deutsch.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0498/8734/6846/files/54667600457.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0486/3187/3704/files/xetunovoxiwatuvoxunoxufix.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0478/4508/1247/files/170cm_to_inches_feet.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_off00004c25.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4C25	5760 bytes
SHA-256: `d5ee4e959fb8a565ebeaaca496c0a53af089c23051b04c19f6250e619746ae49`
`font_01_sfnt_off00005f98.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F98	10096 bytes
SHA-256: `3d586ca5cfebc1aa8765a1a792435e35d0b05164229a4c011bab2759586e4439`

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