PDF malware analysis — malicious · 1ea650e145f17cf5

MALICIOUS

PDF

42.4 KB Created: 2020-10-17 01:54:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10

MD5: 670e99cee64fa45d467bc1558ef5deef SHA-1: 2647df542fe0b730eafab6ec9074b9160f3e478f SHA-256: 1ea650e145f17cf556afb57f7d748d94f75f9b47d90225f5255503dec3bbe17f

184 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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 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.
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=solucionario+matematicas+4+eso+bru%25C3%25B1o+opcion+b In PDF document text
- https://sixapinipuso.weebly.com/uploads/1/3/1/3/131384402/depenop.pdfIn PDF document text
- https://rabexowubomisuw.weebly.com/uploads/1/3/1/4/131407155/4265790.pdfIn PDF document text
- https://koxoganonigowup.weebly.com/uploads/1/3/1/4/131408343/dudokad-rajutanim.pdfIn PDF document text
- https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/4643970e.pdfIn PDF document text
- https://misutinulil.weebly.com/uploads/1/3/1/4/131407711/fanarukok.pdfIn PDF document text
- https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/kadijamiruvinugeno.pdfIn PDF document text
- https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/bademasotud-muwoxob-keruluzaraji-tiwifozexomepog.pdfIn PDF document text
- https://rezizeme.weebly.com/uploads/1/3/0/7/130775554/wokiva_pisukugozimu_xapobebinub.pdfIn PDF document text
- https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/5529495.pdfIn PDF document text
- https://ziperivowupidu.weebly.com/uploads/1/3/1/3/131381589/4974015.pdfIn PDF document text
- https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/rexileda-gojaja.pdfIn PDF document text
- https://dojulukasinu.weebly.com/uploads/1/3/0/7/130776790/4499251.pdfIn PDF document text
- https://zisokilusativ.weebly.com/uploads/1/3/2/3/132303079/1385426.pdfIn PDF document text
- https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/9b53ec72f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365552/normal_5f8755ca18f78.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369901/normal_5f89744563d1b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374522/normal_5f89e75c45936.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371258/normal_5f8a1c9267d63.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366989/normal_5f876677dd9bd.pdfIn PDF document text
- https://vafuzetok.weebly.com/uploads/1/3/2/7/132740798/7759374.pdfIn PDF document text
- https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/5acab582ad41.pdfIn PDF document text
- https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/xulatadetoverudoguz.pdfIn PDF document text
- https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/940900.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0266/8671/8129/files/happy_valley_middle_school_carter_county_tn.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6952/2599/files/91229845073.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005634.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5634	5504 bytes
SHA-256: `08e613eae529322c0d4f1f8cd517d041f418dbbf01ec2da48b35fc55cde96483`
`font_01_sfnt_off0000687c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x687C	10628 bytes
SHA-256: `737fffbe681210b550877c41441e8776c14ba985c32b75b219b6a2f11ffea115`
`font_02_sfnt_off00008b0f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B0F	4324 bytes
SHA-256: `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`

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