PDF malware analysis — malicious · 38aea8054028450c

MALICIOUS

PDF

40.6 KB Created: 2020-10-23 00:18:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10

MD5: 9c5dc4b60e6da4eb1b06a007446a4619 SHA-1: 669a3b2e26d49afdc85669bf330e88fa6750e083 SHA-256: 38aea8054028450c521c70e464ba51c8bbdfb5554a592081248c07688d23862c

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://gettraff.ru/aws?keyword=anger+management+pdf+workbook In PDF document text
- https://wemibevufiwoseb.weebly.com/uploads/1/3/0/8/130813314/8add140d6.pdfIn PDF document text
- https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/f6df655a19a0b84.pdfIn PDF document text
- https://zuxobopabure.weebly.com/uploads/1/3/4/3/134344154/zesawev.pdfIn PDF document text
- https://xivenisulebitok.weebly.com/uploads/1/3/1/3/131378814/9261265.pdfIn PDF document text
- https://tijujuvuxerupuz.weebly.com/uploads/1/3/4/2/134236121/buwexujej.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365660/normal_5f8703f9406da.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365627/normal_5f877e5ceb1ae.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375352/normal_5f8e54cee69fb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367680/normal_5f87e22b71318.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374535/normal_5f8a4c7223eb6.pdfIn PDF document text
- https://jaserasozupog.weebly.com/uploads/1/3/1/4/131454215/tevow.pdfIn PDF document text
- https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/visepijejasikari.pdfIn PDF document text
- https://wedebiki.weebly.com/uploads/1/3/0/9/130969436/9324627.pdfIn PDF document text
- https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/d07c425542415c.pdfIn PDF document text
- https://botubadixebom.weebly.com/uploads/1/3/1/4/131407995/4622f989.pdfIn PDF document text
- https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/funagifim.pdfIn PDF document text
- https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/3718456.pdfIn PDF document text
- https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/digokasawuj-jipamuputevuf.pdfIn PDF document text
- https://vebifejelib.weebly.com/uploads/1/3/0/7/130775119/dipuzusem_jabiti.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/53d6bee3-bdbf-40ea-ab5d-4f38f1047080/sivuma.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/57e88561-f747-4d18-96af-b1e8814a41b5/55817324935.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2cd611d2-ee97-4fd7-913f-464d37794880/gokav.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/eda52057-bb51-46d4-bc9f-74efc05a27d5/sergio_pinto_martins_direito_do_trabalho.pdfIn PDF document text
- https://s3.amazonaws.com/zetare/bonolota_sen_by_jibanananda_das.pdfIn PDF document text
- https://s3.amazonaws.com/gofilafixu/baedeker_guides.pdfIn PDF document text
- https://s3.amazonaws.com/xunilukegez/tefovoberutuxepunidiredap.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_off00005f05.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F05	5436 bytes
SHA-256: `ca2da9a0d7e15473da3b48a0550ea4689bb6343436daae8a3fe064c19ec88043`
`font_01_sfnt_off00007176.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7176	10332 bytes
SHA-256: `a14a0d556e218b968d4cd8ec5c925f3b6936580da4ef44a7bff1c6fe31224777`

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